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splice not working properly
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es5-shim-3.4.0.js
/*!
* https://github.com/es-shims/es5-shim
* @license es5-shim Copyright 2009-2014 by contributors, MIT License
* see https://github.com/es-shims/es5-shim/blob/master/LICENSE
*/
// vim: ts=4 sts=4 sw=4 expandtab
//Add semicolon to prevent IIFE from being passed as argument to concated code.
;
// UMD (Universal Module Definition)
// see https://github.com/umdjs/umd/blob/master/returnExports.js
(function (root, factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(factory);
} else if (typeof exports === 'object') {
// Node. Does not work with strict CommonJS, but
// only CommonJS-like enviroments that support module.exports,
// like Node.
module.exports = factory();
} else {
// Browser globals (root is window)
root.returnExports = factory();
}
}(this, function () {
/**
* Brings an environment as close to ECMAScript 5 compliance
* as is possible with the facilities of erstwhile engines.
*
* Annotated ES5: http://es5.github.com/ (specific links below)
* ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
* Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/
*/
// Shortcut to an often accessed properties, in order to avoid multiple
// dereference that costs universally.
var call = Function.prototype.call;
var prototypeOfArray = Array.prototype;
var prototypeOfObject = Object.prototype;
var _Array_slice_ = prototypeOfArray.slice;
var array_splice = Array.prototype.splice;
var array_push = Array.prototype.push;
var array_unshift = Array.prototype.unshift;
// Having a toString local variable name breaks in Opera so use _toString.
var _toString = prototypeOfObject.toString;
var isFunction = function (val) {
return prototypeOfObject.toString.call(val) === '[object Function]';
};
var isRegex = function (val) {
return prototypeOfObject.toString.call(val) === '[object RegExp]';
};
var isArray = function isArray(obj) {
return _toString.call(obj) === "[object Array]";
};
var isArguments = function isArguments(value) {
var str = _toString.call(value);
var isArgs = str === '[object Arguments]';
if (!isArgs) {
isArgs = !isArray(str)
&& value !== null
&& typeof value === 'object'
&& typeof value.length === 'number'
&& value.length >= 0
&& isFunction(value.callee);
}
return isArgs;
};
//
// Function
// ========
//
// ES-5 15.3.4.5
// http://es5.github.com/#x15.3.4.5
function Empty() {}
if (!Function.prototype.bind) {
Function.prototype.bind = function bind(that) { // .length is 1
// 1. Let Target be the this value.
var target = this;
// 2. If IsCallable(Target) is false, throw a TypeError exception.
if (!isFunction(target)) {
throw new TypeError("Function.prototype.bind called on incompatible " + target);
}
// 3. Let A be a new (possibly empty) internal list of all of the
// argument values provided after thisArg (arg1, arg2 etc), in order.
// XXX slicedArgs will stand in for "A" if used
var args = _Array_slice_.call(arguments, 1); // for normal call
// 4. Let F be a new native ECMAScript object.
// 11. Set the [[Prototype]] internal property of F to the standard
// built-in Function prototype object as specified in 15.3.3.1.
// 12. Set the [[Call]] internal property of F as described in
// 15.3.4.5.1.
// 13. Set the [[Construct]] internal property of F as described in
// 15.3.4.5.2.
// 14. Set the [[HasInstance]] internal property of F as described in
// 15.3.4.5.3.
var binder = function () {
if (this instanceof bound) {
// 15.3.4.5.2 [[Construct]]
// When the [[Construct]] internal method of a function object,
// F that was created using the bind function is called with a
// list of arguments ExtraArgs, the following steps are taken:
// 1. Let target be the value of F's [[TargetFunction]]
// internal property.
// 2. If target has no [[Construct]] internal method, a
// TypeError exception is thrown.
// 3. Let boundArgs be the value of F's [[BoundArgs]] internal
// property.
// 4. Let args be a new list containing the same values as the
// list boundArgs in the same order followed by the same
// values as the list ExtraArgs in the same order.
// 5. Return the result of calling the [[Construct]] internal
// method of target providing args as the arguments.
var result = target.apply(
this,
args.concat(_Array_slice_.call(arguments))
);
if (Object(result) === result) {
return result;
}
return this;
} else {
// 15.3.4.5.1 [[Call]]
// When the [[Call]] internal method of a function object, F,
// which was created using the bind function is called with a
// this value and a list of arguments ExtraArgs, the following
// steps are taken:
// 1. Let boundArgs be the value of F's [[BoundArgs]] internal
// property.
// 2. Let boundThis be the value of F's [[BoundThis]] internal
// property.
// 3. Let target be the value of F's [[TargetFunction]] internal
// property.
// 4. Let args be a new list containing the same values as the
// list boundArgs in the same order followed by the same
// values as the list ExtraArgs in the same order.
// 5. Return the result of calling the [[Call]] internal method
// of target providing boundThis as the this value and
// providing args as the arguments.
// equiv: target.call(this, ...boundArgs, ...args)
return target.apply(
that,
args.concat(_Array_slice_.call(arguments))
);
}
};
// 15. If the [[Class]] internal property of Target is "Function", then
// a. Let L be the length property of Target minus the length of A.
// b. Set the length own property of F to either 0 or L, whichever is
// larger.
// 16. Else set the length own property of F to 0.
var boundLength = Math.max(0, target.length - args.length);
// 17. Set the attributes of the length own property of F to the values
// specified in 15.3.5.1.
var boundArgs = [];
for (var i = 0; i < boundLength; i++) {
boundArgs.push("$" + i);
}
// XXX Build a dynamic function with desired amount of arguments is the only
// way to set the length property of a function.
// In environments where Content Security Policies enabled (Chrome extensions,
// for ex.) all use of eval or Function costructor throws an exception.
// However in all of these environments Function.prototype.bind exists
// and so this code will never be executed.
var bound = Function("binder", "return function (" + boundArgs.join(",") + "){return binder.apply(this,arguments)}")(binder);
if (target.prototype) {
Empty.prototype = target.prototype;
bound.prototype = new Empty();
// Clean up dangling references.
Empty.prototype = null;
}
// TODO
// 18. Set the [[Extensible]] internal property of F to true.
// TODO
// 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
// 20. Call the [[DefineOwnProperty]] internal method of F with
// arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
// thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
// false.
// 21. Call the [[DefineOwnProperty]] internal method of F with
// arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
// [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
// and false.
// TODO
// NOTE Function objects created using Function.prototype.bind do not
// have a prototype property or the [[Code]], [[FormalParameters]], and
// [[Scope]] internal properties.
// XXX can't delete prototype in pure-js.
// 22. Return F.
return bound;
};
}
// _Please note: Shortcuts are defined after `Function.prototype.bind` as we
// us it in defining shortcuts.
var owns = call.bind(prototypeOfObject.hasOwnProperty);
// If JS engine supports accessors creating shortcuts.
var defineGetter;
var defineSetter;
var lookupGetter;
var lookupSetter;
var supportsAccessors;
if ((supportsAccessors = owns(prototypeOfObject, "__defineGetter__"))) {
defineGetter = call.bind(prototypeOfObject.__defineGetter__);
defineSetter = call.bind(prototypeOfObject.__defineSetter__);
lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);
lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);
}
//
// Array
// =====
//
// ES5 15.4.4.12
// http://es5.github.com/#x15.4.4.12
var spliceWorksWithEmptyObject = (function () {
var obj = {};
Array.prototype.splice.call(obj, 0, 0, 1);
return obj.length === 1;
}());
var omittingSecondSpliceArgIsNoop = [1].splice(0).length === 0;
var spliceNoopReturnsEmptyArray = (function () {
var a = [1, 2];
var result = a.splice();
return a.length === 2 && isArray(result) && result.length === 0;
}());
if (spliceNoopReturnsEmptyArray) {
// Safari 5.0 bug where .split() returns undefined
Array.prototype.splice = function splice(start, deleteCount) {
if (arguments.length === 0) { return []; }
else { return array_splice.apply(this, arguments); }
};
}
if (!omittingSecondSpliceArgIsNoop || !spliceWorksWithEmptyObject) {
Array.prototype.splice = function splice(start, deleteCount) {
if (arguments.length === 0) { return []; }
var args = arguments;
this.length = Math.max(toInteger(this.length), 0);
if (arguments.length > 0 && typeof deleteCount !== 'number') {
args = _Array_slice_.call(arguments);
if (args.length < 2) { args.push(toInteger(deleteCount)); }
else { args[1] = toInteger(deleteCount); }
}
return array_splice.apply(this, args);
};
}
// ES5 15.4.4.12
// http://es5.github.com/#x15.4.4.13
// Return len+argCount.
// [bugfix, ielt8]
// IE < 8 bug: [].unshift(0) === undefined but should be "1"
if ([].unshift(0) !== 1) {
Array.prototype.unshift = function () {
array_unshift.apply(this, arguments);
return this.length;
};
}
// ES5 15.4.3.2
// http://es5.github.com/#x15.4.3.2
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
if (!Array.isArray) {
Array.isArray = isArray;
}
// The IsCallable() check in the Array functions
// has been replaced with a strict check on the
// internal class of the object to trap cases where
// the provided function was actually a regular
// expression literal, which in V8 and
// JavaScriptCore is a typeof "function". Only in
// V8 are regular expression literals permitted as
// reduce parameters, so it is desirable in the
// general case for the shim to match the more
// strict and common behavior of rejecting regular
// expressions.
// ES5 15.4.4.18
// http://es5.github.com/#x15.4.4.18
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach
// Check failure of by-index access of string characters (IE < 9)
// and failure of `0 in boxedString` (Rhino)
var boxedString = Object("a");
var splitString = boxedString[0] !== "a" || !(0 in boxedString);
var properlyBoxesContext = function properlyBoxed(method) {
// Check node 0.6.21 bug where third parameter is not boxed
var properlyBoxesNonStrict = true;
var properlyBoxesStrict = true;
if (method) {
method.call('foo', function (_, __, context) {
if (typeof context !== 'object') { properlyBoxesNonStrict = false; }
});
method.call([1], function () {
'use strict';
properlyBoxesStrict = typeof this === 'string';
}, 'x');
}
return !!method && properlyBoxesNonStrict && properlyBoxesStrict;
};
if (!Array.prototype.forEach || !properlyBoxesContext(Array.prototype.forEach)) {
Array.prototype.forEach = function forEach(fun /*, thisp*/) {
var object = toObject(this),
self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
object,
thisp = arguments[1],
i = -1,
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (!isFunction(fun)) {
throw new TypeError(); // TODO message
}
while (++i < length) {
if (i in self) {
// Invoke the callback function with call, passing arguments:
// context, property value, property key, thisArg object
// context
fun.call(thisp, self[i], i, object);
}
}
};
}
// ES5 15.4.4.19
// http://es5.github.com/#x15.4.4.19
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map
if (!Array.prototype.map || !properlyBoxesContext(Array.prototype.map)) {
Array.prototype.map = function map(fun /*, thisp*/) {
var object = toObject(this),
self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
object,
length = self.length >>> 0,
result = Array(length),
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (!isFunction(fun)) {
throw new TypeError(fun + " is not a function");
}
for (var i = 0; i < length; i++) {
if (i in self) {
result[i] = fun.call(thisp, self[i], i, object);
}
}
return result;
};
}
// ES5 15.4.4.20
// http://es5.github.com/#x15.4.4.20
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter
if (!Array.prototype.filter || !properlyBoxesContext(Array.prototype.filter)) {
Array.prototype.filter = function filter(fun /*, thisp */) {
var object = toObject(this),
self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
object,
length = self.length >>> 0,
result = [],
value,
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (!isFunction(fun)) {
throw new TypeError(fun + " is not a function");
}
for (var i = 0; i < length; i++) {
if (i in self) {
value = self[i];
if (fun.call(thisp, value, i, object)) {
result.push(value);
}
}
}
return result;
};
}
// ES5 15.4.4.16
// http://es5.github.com/#x15.4.4.16
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
if (!Array.prototype.every || !properlyBoxesContext(Array.prototype.every)) {
Array.prototype.every = function every(fun /*, thisp */) {
var object = toObject(this),
self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
object,
length = self.length >>> 0,
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (!isFunction(fun)) {
throw new TypeError(fun + " is not a function");
}
for (var i = 0; i < length; i++) {
if (i in self && !fun.call(thisp, self[i], i, object)) {
return false;
}
}
return true;
};
}
// ES5 15.4.4.17
// http://es5.github.com/#x15.4.4.17
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
if (!Array.prototype.some || !properlyBoxesContext(Array.prototype.some)) {
Array.prototype.some = function some(fun /*, thisp */) {
var object = toObject(this),
self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
object,
length = self.length >>> 0,
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (!isFunction(fun)) {
throw new TypeError(fun + " is not a function");
}
for (var i = 0; i < length; i++) {
if (i in self && fun.call(thisp, self[i], i, object)) {
return true;
}
}
return false;
};
}
// ES5 15.4.4.21
// http://es5.github.com/#x15.4.4.21
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce
var reduceCoercesToObject = false;
if (Array.prototype.reduce) {
reduceCoercesToObject = typeof Array.prototype.reduce.call('es5', function (_, __, ___, list) { return list; }) === 'object';
}
if (!Array.prototype.reduce || !reduceCoercesToObject) {
Array.prototype.reduce = function reduce(fun /*, initial*/) {
var object = toObject(this),
self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
object,
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (!isFunction(fun)) {
throw new TypeError(fun + " is not a function");
}
// no value to return if no initial value and an empty array
if (!length && arguments.length === 1) {
throw new TypeError("reduce of empty array with no initial value");
}
var i = 0;
var result;
if (arguments.length >= 2) {
result = arguments[1];
} else {
do {
if (i in self) {
result = self[i++];
break;
}
// if array contains no values, no initial value to return
if (++i >= length) {
throw new TypeError("reduce of empty array with no initial value");
}
} while (true);
}
for (; i < length; i++) {
if (i in self) {
result = fun.call(void 0, result, self[i], i, object);
}
}
return result;
};
}
// ES5 15.4.4.22
// http://es5.github.com/#x15.4.4.22
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight
var reduceRightCoercesToObject = false;
if (Array.prototype.reduceRight) {
reduceRightCoercesToObject = typeof Array.prototype.reduceRight.call('es5', function (_, __, ___, list) { return list; }) === 'object';
}
if (!Array.prototype.reduceRight || !reduceRightCoercesToObject) {
Array.prototype.reduceRight = function reduceRight(fun /*, initial*/) {
var object = toObject(this),
self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
object,
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (!isFunction(fun)) {
throw new TypeError(fun + " is not a function");
}
// no value to return if no initial value, empty array
if (!length && arguments.length === 1) {
throw new TypeError("reduceRight of empty array with no initial value");
}
var result, i = length - 1;
if (arguments.length >= 2) {
result = arguments[1];
} else {
do {
if (i in self) {
result = self[i--];
break;
}
// if array contains no values, no initial value to return
if (--i < 0) {
throw new TypeError("reduceRight of empty array with no initial value");
}
} while (true);
}
if (i < 0) {
return result;
}
do {
if (i in self) {
result = fun.call(void 0, result, self[i], i, object);
}
} while (i--);
return result;
};
}
// ES5 15.4.4.14
// http://es5.github.com/#x15.4.4.14
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
if (!Array.prototype.indexOf || ([0, 1].indexOf(1, 2) !== -1)) {
Array.prototype.indexOf = function indexOf(sought /*, fromIndex */ ) {
var self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
toObject(this),
length = self.length >>> 0;
if (!length) {
return -1;
}
var i = 0;
if (arguments.length > 1) {
i = toInteger(arguments[1]);
}
// handle negative indices
i = i >= 0 ? i : Math.max(0, length + i);
for (; i < length; i++) {
if (i in self && self[i] === sought) {
return i;
}
}
return -1;
};
}
// ES5 15.4.4.15
// http://es5.github.com/#x15.4.4.15
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
if (!Array.prototype.lastIndexOf || ([0, 1].lastIndexOf(0, -3) !== -1)) {
Array.prototype.lastIndexOf = function lastIndexOf(sought /*, fromIndex */) {
var self = splitString && _toString.call(this) === "[object String]" ?
this.split("") :
toObject(this),
length = self.length >>> 0;
if (!length) {
return -1;
}
var i = length - 1;
if (arguments.length > 1) {
i = Math.min(i, toInteger(arguments[1]));
}
// handle negative indices
i = i >= 0 ? i : length - Math.abs(i);
for (; i >= 0; i--) {
if (i in self && sought === self[i]) {
return i;
}
}
return -1;
};
}
//
// Object
// ======
//
// ES5 15.2.3.14
// http://es5.github.com/#x15.2.3.14
var keysWorksWithArguments = Object.keys && (function () {
return Object.keys(arguments).length === 2;
}(1, 2));
if (!Object.keys) {
// http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
var hasDontEnumBug = !({'toString': null}).propertyIsEnumerable('toString'),
hasProtoEnumBug = (function () {}).propertyIsEnumerable('prototype'),
dontEnums = [
"toString",
"toLocaleString",
"valueOf",
"hasOwnProperty",
"isPrototypeOf",
"propertyIsEnumerable",
"constructor"
],
dontEnumsLength = dontEnums.length;
Object.keys = function keys(object) {
var isFn = isFunction(object),
isArgs = isArguments(object),
isObject = object !== null && typeof object === 'object',
isString = isObject && _toString.call(object) === '[object String]';
if (!isObject && !isFn && !isArgs) {
throw new TypeError("Object.keys called on a non-object");
}
var theKeys = [];
var skipProto = hasProtoEnumBug && isFn;
if (isString || isArgs) {
for (var i = 0; i < object.length; ++i) {
theKeys.push(String(i));
}
} else {
for (var name in object) {
if (!(skipProto && name === 'prototype') && owns(object, name)) {
theKeys.push(String(name));
}
}
}
if (hasDontEnumBug) {
var ctor = object.constructor,
skipConstructor = ctor && ctor.prototype === object;
for (var j = 0; j < dontEnumsLength; j++) {
var dontEnum = dontEnums[j];
if (!(skipConstructor && dontEnum === 'constructor') && owns(object, dontEnum)) {
theKeys.push(dontEnum);
}
}
}
return theKeys;
};
} else if (!keysWorksWithArguments) {
// Safari 5.0 bug
var originalKeys = Object.keys;
Object.keys = function keys(object) {
if (isArguments(object)) {
return originalKeys(Array.prototype.slice.call(object));
} else {
return originalKeys(object);
}
};
}
//
// Date
// ====
//
// ES5 15.9.5.43
// http://es5.github.com/#x15.9.5.43
// This function returns a String value represent the instance in time
// represented by this Date object. The format of the String is the Date Time
// string format defined in 15.9.1.15. All fields are present in the String.
// The time zone is always UTC, denoted by the suffix Z. If the time value of
// this object is not a finite Number a RangeError exception is thrown.
var negativeDate = -62198755200000,
negativeYearString = "-000001";
if (
!Date.prototype.toISOString ||
(new Date(negativeDate).toISOString().indexOf(negativeYearString) === -1)
) {
Date.prototype.toISOString = function toISOString() {
var result, length, value, year, month;
if (!isFinite(this)) {
throw new RangeError("Date.prototype.toISOString called on non-finite value.");
}
year = this.getUTCFullYear();
month = this.getUTCMonth();
// see https://github.com/es-shims/es5-shim/issues/111
year += Math.floor(month / 12);
month = (month % 12 + 12) % 12;
// the date time string format is specified in 15.9.1.15.
result = [month + 1, this.getUTCDate(), this.getUTCHours(), this.getUTCMinutes(), this.getUTCSeconds()];
year = (
(year < 0 ? "-" : (year > 9999 ? "+" : "")) +
("00000" + Math.abs(year)).slice(0 <= year && year <= 9999 ? -4 : -6)
);
length = result.length;
while (length--) {
value = result[length];
// pad months, days, hours, minutes, and seconds to have two
// digits.
if (value < 10) {
result[length] = "0" + value;
}
}
// pad milliseconds to have three digits.
return (
year + "-" + result.slice(0, 2).join("-") +
"T" + result.slice(2).join(":") + "." +
("000" + this.getUTCMilliseconds()).slice(-3) + "Z"
);
};
}
// ES5 15.9.5.44
// http://es5.github.com/#x15.9.5.44
// This function provides a String representation of a Date object for use by
// JSON.stringify (15.12.3).
var dateToJSONIsSupported = false;
try {
dateToJSONIsSupported = (
Date.prototype.toJSON &&
new Date(NaN).toJSON() === null &&
new Date(negativeDate).toJSON().indexOf(negativeYearString) !== -1 &&
Date.prototype.toJSON.call({ // generic
toISOString: function () {
return true;
}
})
);
} catch (e) {
}
if (!dateToJSONIsSupported) {
Date.prototype.toJSON = function toJSON(key) {
// When the toJSON method is called with argument key, the following
// steps are taken:
// 1. Let O be the result of calling ToObject, giving it the this
// value as its argument.
// 2. Let tv be toPrimitive(O, hint Number).
var o = Object(this),
tv = toPrimitive(o),
toISO;
// 3. If tv is a Number and is not finite, return null.
if (typeof tv === "number" && !isFinite(tv)) {
return null;
}
// 4. Let toISO be the result of calling the [[Get]] internal method of
// O with argument "toISOString".
toISO = o.toISOString;
// 5. If IsCallable(toISO) is false, throw a TypeError exception.
if (typeof toISO !== "function") {
throw new TypeError("toISOString property is not callable");
}
// 6. Return the result of calling the [[Call]] internal method of
// toISO with O as the this value and an empty argument list.
return toISO.call(o);
// NOTE 1 The argument is ignored.
// NOTE 2 The toJSON function is intentionally generic; it does not
// require that its this value be a Date object. Therefore, it can be
// transferred to other kinds of objects for use as a method. However,
// it does require that any such object have a toISOString method. An
// object is free to use the argument key to filter its
// stringification.
};
}
// ES5 15.9.4.2
// http://es5.github.com/#x15.9.4.2
// based on work shared by Daniel Friesen (dantman)
// http://gist.github.com/303249
var supportsExtendedYears = Date.parse('+033658-09-27T01:46:40.000Z') === 1e15;
var acceptsInvalidDates = !isNaN(Date.parse('2012-04-04T24:00:00.500Z')) || !isNaN(Date.parse('2012-11-31T23:59:59.000Z'));
var doesNotParseY2KNewYear = isNaN(Date.parse("2000-01-01T00:00:00.000Z"));
if (!Date.parse || doesNotParseY2KNewYear || acceptsInvalidDates || !supportsExtendedYears) {
// XXX global assignment won't work in embeddings that use
// an alternate object for the context.
Date = (function (NativeDate) {
// Date.length === 7
function Date(Y, M, D, h, m, s, ms) {
var length = arguments.length;
if (this instanceof NativeDate) {
var date = length === 1 && String(Y) === Y ? // isString(Y)
// We explicitly pass it through parse:
new NativeDate(Date.parse(Y)) :
// We have to manually make calls depending on argument
// length here
length >= 7 ? new NativeDate(Y, M, D, h, m, s, ms) :
length >= 6 ? new NativeDate(Y, M, D, h, m, s) :
length >= 5 ? new NativeDate(Y, M, D, h, m) :
length >= 4 ? new NativeDate(Y, M, D, h) :
length >= 3 ? new NativeDate(Y, M, D) :
length >= 2 ? new NativeDate(Y, M) :
length >= 1 ? new NativeDate(Y) :
new NativeDate();
// Prevent mixups with unfixed Date object
date.constructor = Date;
return date;
}
return NativeDate.apply(this, arguments);
}
// 15.9.1.15 Date Time String Format.
var isoDateExpression = new RegExp("^" +
"(\\d{4}|[\+\-]\\d{6})" + // four-digit year capture or sign +
// 6-digit extended year
"(?:-(\\d{2})" + // optional month capture
"(?:-(\\d{2})" + // optional day capture
"(?:" + // capture hours:minutes:seconds.milliseconds
"T(\\d{2})" + // hours capture
":(\\d{2})" + // minutes capture
"(?:" + // optional :seconds.milliseconds
":(\\d{2})" + // seconds capture
"(?:(\\.\\d{1,}))?" + // milliseconds capture
")?" +
"(" + // capture UTC offset component
"Z|" + // UTC capture
"(?:" + // offset specifier +/-hours:minutes
"([-+])" + // sign capture
"(\\d{2})" + // hours offset capture
":(\\d{2})" + // minutes offset capture
")" +
")?)?)?)?" +
"$");
var months = [
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365
];
function dayFromMonth(year, month) {
var t = month > 1 ? 1 : 0;
return (
months[month] +
Math.floor((year - 1969 + t) / 4) -
Math.floor((year - 1901 + t) / 100) +
Math.floor((year - 1601 + t) / 400) +
365 * (year - 1970)
);
}
function toUTC(t) {
return Number(new NativeDate(1970, 0, 1, 0, 0, 0, t));
}
// Copy any custom methods a 3rd party library may have added
for (var key in NativeDate) {
Date[key] = NativeDate[key];
}
// Copy "native" methods explicitly; they may be non-enumerable
Date.now = NativeDate.now;
Date.UTC = NativeDate.UTC;
Date.prototype = NativeDate.prototype;
Date.prototype.constructor = Date;
// Upgrade Date.parse to handle simplified ISO 8601 strings
Date.parse = function parse(string) {
var match = isoDateExpression.exec(string);
if (match) {
// parse months, days, hours, minutes, seconds, and milliseconds
// provide default values if necessary
// parse the UTC offset component
var year = Number(match[1]),
month = Number(match[2] || 1) - 1,
day = Number(match[3] || 1) - 1,
hour = Number(match[4] || 0),
minute = Number(match[5] || 0),
second = Number(match[6] || 0),
millisecond = Math.floor(Number(match[7] || 0) * 1000),
// When time zone is missed, local offset should be used
// (ES 5.1 bug)
// see https://bugs.ecmascript.org/show_bug.cgi?id=112
isLocalTime = Boolean(match[4] && !match[8]),
signOffset = match[9] === "-" ? 1 : -1,
hourOffset = Number(match[10] || 0),
minuteOffset = Number(match[11] || 0),
result;
if (
hour < (
minute > 0 || second > 0 || millisecond > 0 ?
24 : 25
) &&
minute < 60 && second < 60 && millisecond < 1000 &&
month > -1 && month < 12 && hourOffset < 24 &&
minuteOffset < 60 && // detect invalid offsets
day > -1 &&
day < (
dayFromMonth(year, month + 1) -
dayFromMonth(year, month)
)
) {
result = (
(dayFromMonth(year, month) + day) * 24 +
hour +
hourOffset * signOffset
) * 60;
result = (
(result + minute + minuteOffset * signOffset) * 60 +
second
) * 1000 + millisecond;
if (isLocalTime) {
result = toUTC(result);
}
if (-8.64e15 <= result && result <= 8.64e15) {
return result;
}
}
return NaN;
}
return NativeDate.parse.apply(this, arguments);
};
return Date;
})(Date);
}
// ES5 15.9.4.4
// http://es5.github.com/#x15.9.4.4
if (!Date.now) {
Date.now = function now() {
return new Date().getTime();
};
}
//
// Number
// ======
//
// ES5.1 15.7.4.5
// http://es5.github.com/#x15.7.4.5
if (!Number.prototype.toFixed || (0.00008).toFixed(3) !== '0.000' || (0.9).toFixed(0) === '0' || (1.255).toFixed(2) !== '1.25' || (1000000000000000128).toFixed(0) !== "1000000000000000128") {
// Hide these variables and functions
(function () {
var base, size, data, i;
base = 1e7;
size = 6;
data = [0, 0, 0, 0, 0, 0];
function multiply(n, c) {
var i = -1;
while (++i < size) {
c += n * data[i];
data[i] = c % base;
c = Math.floor(c / base);
}
}
function divide(n) {
var i = size, c = 0;
while (--i >= 0) {
c += data[i];
data[i] = Math.floor(c / n);
c = (c % n) * base;
}
}
function numToString() {
var i = size;
var s = '';
while (--i >= 0) {
if (s !== '' || i === 0 || data[i] !== 0) {
var t = String(data[i]);
if (s === '') {
s = t;
} else {
s += '0000000'.slice(0, 7 - t.length) + t;
}
}
}
return s;
}
function pow(x, n, acc) {
return (n === 0 ? acc : (n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc)));
}
function log(x) {
var n = 0;
while (x >= 4096) {
n += 12;
x /= 4096;
}
while (x >= 2) {
n += 1;
x /= 2;
}
return n;
}
Number.prototype.toFixed = function toFixed(fractionDigits) {
var f, x, s, m, e, z, j, k;
// Test for NaN and round fractionDigits down
f = Number(fractionDigits);
f = f !== f ? 0 : Math.floor(f);
if (f < 0 || f > 20) {
throw new RangeError("Number.toFixed called with invalid number of decimals");
}
x = Number(this);
// Test for NaN
if (x !== x) {
return "NaN";
}
// If it is too big or small, return the string value of the number
if (x <= -1e21 || x >= 1e21) {
return String(x);
}
s = "";
if (x < 0) {
s = "-";
x = -x;
}
m = "0";
if (x > 1e-21) {
// 1e-21 < x < 1e21
// -70 < log2(x) < 70
e = log(x * pow(2, 69, 1)) - 69;
z = (e < 0 ? x * pow(2, -e, 1) : x / pow(2, e, 1));
z *= 0x10000000000000; // Math.pow(2, 52);
e = 52 - e;
// -18 < e < 122
// x = z / 2 ^ e
if (e > 0) {
multiply(0, z);
j = f;
while (j >= 7) {
multiply(1e7, 0);
j -= 7;
}
multiply(pow(10, j, 1), 0);
j = e - 1;
while (j >= 23) {
divide(1 << 23);
j -= 23;
}
divide(1 << j);
multiply(1, 1);
divide(2);
m = numToString();
} else {
multiply(0, z);
multiply(1 << (-e), 0);
m = numToString() + '0.00000000000000000000'.slice(2, 2 + f);
}
}
if (f > 0) {
k = m.length;
if (k <= f) {
m = s + '0.0000000000000000000'.slice(0, f - k + 2) + m;
} else {
m = s + m.slice(0, k - f) + '.' + m.slice(k - f);
}
} else {
m = s + m;
}
return m;
};
}());
}
//
// String
// ======
//
// ES5 15.5.4.14
// http://es5.github.com/#x15.5.4.14
// [bugfix, IE lt 9, firefox 4, Konqueror, Opera, obscure browsers]
// Many browsers do not split properly with regular expressions or they
// do not perform the split correctly under obscure conditions.
// See http://blog.stevenlevithan.com/archives/cross-browser-split
// I've tested in many browsers and this seems to cover the deviant ones:
// 'ab'.split(/(?:ab)*/) should be ["", ""], not [""]
// '.'.split(/(.?)(.?)/) should be ["", ".", "", ""], not ["", ""]
// 'tesst'.split(/(s)*/) should be ["t", undefined, "e", "s", "t"], not
// [undefined, "t", undefined, "e", ...]
// ''.split(/.?/) should be [], not [""]
// '.'.split(/()()/) should be ["."], not ["", "", "."]
var string_split = String.prototype.split;
if (
'ab'.split(/(?:ab)*/).length !== 2 ||
'.'.split(/(.?)(.?)/).length !== 4 ||
'tesst'.split(/(s)*/)[1] === "t" ||
'test'.split(/(?:)/, -1).length !== 4 ||
''.split(/.?/).length ||
'.'.split(/()()/).length > 1
) {
(function () {
var compliantExecNpcg = /()??/.exec("")[1] === void 0; // NPCG: nonparticipating capturing group
String.prototype.split = function (separator, limit) {
var string = this;
if (separator === void 0 && limit === 0) {
return [];
}
// If `separator` is not a regex, use native split
if (_toString.call(separator) !== "[object RegExp]") {
return string_split.call(this, separator, limit);
}
var output = [],
flags = (separator.ignoreCase ? "i" : "") +
(separator.multiline ? "m" : "") +
(separator.extended ? "x" : "") + // Proposed for ES6
(separator.sticky ? "y" : ""), // Firefox 3+
lastLastIndex = 0,
// Make `global` and avoid `lastIndex` issues by working with a copy
separator2, match, lastIndex, lastLength;
separator = new RegExp(separator.source, flags + "g");
string += ""; // Type-convert
if (!compliantExecNpcg) {
// Doesn't need flags gy, but they don't hurt
separator2 = new RegExp("^" + separator.source + "$(?!\\s)", flags);
}
/* Values for `limit`, per the spec:
* If undefined: 4294967295 // Math.pow(2, 32) - 1
* If 0, Infinity, or NaN: 0
* If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
* If negative number: 4294967296 - Math.floor(Math.abs(limit))
* If other: Type-convert, then use the above rules
*/
limit = limit === void 0 ?
-1 >>> 0 : // Math.pow(2, 32) - 1
ToUint32(limit);
while (match = separator.exec(string)) {
// `separator.lastIndex` is not reliable cross-browser
lastIndex = match.index + match[0].length;
if (lastIndex > lastLastIndex) {
output.push(string.slice(lastLastIndex, match.index));
// Fix browsers whose `exec` methods don't consistently return `undefined` for
// nonparticipating capturing groups
if (!compliantExecNpcg && match.length > 1) {
match[0].replace(separator2, function () {
for (var i = 1; i < arguments.length - 2; i++) {
if (arguments[i] === void 0) {
match[i] = void 0;
}
}
});
}
if (match.length > 1 && match.index < string.length) {
Array.prototype.push.apply(output, match.slice(1));
}
lastLength = match[0].length;
lastLastIndex = lastIndex;
if (output.length >= limit) {
break;
}
}
if (separator.lastIndex === match.index) {
separator.lastIndex++; // Avoid an infinite loop
}
}
if (lastLastIndex === string.length) {
if (lastLength || !separator.test("")) {
output.push("");
}
} else {
output.push(string.slice(lastLastIndex));
}
return output.length > limit ? output.slice(0, limit) : output;
};
}());
// [bugfix, chrome]
// If separator is undefined, then the result array contains just one String,
// which is the this value (converted to a String). If limit is not undefined,
// then the output array is truncated so that it contains no more than limit
// elements.
// "0".split(undefined, 0) -> []
} else if ("0".split(void 0, 0).length) {
String.prototype.split = function split(separator, limit) {
if (separator === void 0 && limit === 0) { return []; }
return string_split.call(this, separator, limit);
};
}
var str_replace = String.prototype.replace;
var replaceReportsGroupsCorrectly = (function () {
var groups = [];
'x'.replace(/x(.)?/g, function (match, group) {
groups.push(group);
});
return groups.length === 1 && typeof groups[0] === 'undefined';
}());
if (!replaceReportsGroupsCorrectly) {
String.prototype.replace = function replace(searchValue, replaceValue) {
var isFn = isFunction(replaceValue);
var hasCapturingGroups = isRegex(searchValue) && (/\)[*?]/).test(searchValue.source);
if (!isFn || !hasCapturingGroups) {
return str_replace.call(this, searchValue, replaceValue);
} else {
var wrappedReplaceValue = function (match) {
var length = arguments.length;
var originalLastIndex = searchValue.lastIndex;
searchValue.lastIndex = 0;
var args = searchValue.exec(match);
searchValue.lastIndex = originalLastIndex;
args.push(arguments[length - 2], arguments[length - 1]);
return replaceValue.apply(this, args);
};
return str_replace.call(this, searchValue, wrappedReplaceValue);
}
};
}
// ECMA-262, 3rd B.2.3
// Not an ECMAScript standard, although ECMAScript 3rd Edition has a
// non-normative section suggesting uniform semantics and it should be
// normalized across all browsers
// [bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
if ("".substr && "0b".substr(-1) !== "b") {
var string_substr = String.prototype.substr;
/**
* Get the substring of a string
* @param {integer} start where to start the substring
* @param {integer} length how many characters to return
* @return {string}
*/
String.prototype.substr = function substr(start, length) {
return string_substr.call(
this,
start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,
length
);
};
}
// ES5 15.5.4.20
// whitespace from: http://es5.github.io/#x15.5.4.20
var ws = "\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003" +
"\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028" +
"\u2029\uFEFF";
var zeroWidth = '\u200b';
if (!String.prototype.trim || ws.trim() || !zeroWidth.trim()) {
// http://blog.stevenlevithan.com/archives/faster-trim-javascript
// http://perfectionkills.com/whitespace-deviations/
ws = "[" + ws + "]";
var trimBeginRegexp = new RegExp("^" + ws + ws + "*"),
trimEndRegexp = new RegExp(ws + ws + "*$");
String.prototype.trim = function trim() {
if (this === void 0 || this === null) {
throw new TypeError("can't convert " + this + " to object");
}
return String(this)
.replace(trimBeginRegexp, "")
.replace(trimEndRegexp, "");
};
}
// ES-5 15.1.2.2
if (parseInt(ws + '08') !== 8 || parseInt(ws + '0x16') !== 22) {
parseInt = (function (origParseInt) {
var hexRegex = /^0[xX]/;
return function parseIntES5(str, radix) {
str = String(str).trim();
if (!Number(radix)) {
radix = hexRegex.test(str) ? 16 : 10;
}
return origParseInt(str, radix);
};
}(parseInt));
}
//
// Util
// ======
//
// ES5 9.4
// http://es5.github.com/#x9.4
// http://jsperf.com/to-integer
function toInteger(n) {
n = +n;
if (n !== n) { // isNaN
n = 0;
} else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
n = (n > 0 || -1) * Math.floor(Math.abs(n));
}
return n;
}
function isPrimitive(input) {
var type = typeof input;
return (
input === null ||
type === "undefined" ||
type === "boolean" ||
type === "number" ||
type === "string"
);
}
function toPrimitive(input) {
var val, valueOf, toStr;
if (isPrimitive(input)) {
return input;
}
valueOf = input.valueOf;
if (isFunction(valueOf)) {
val = valueOf.call(input);
if (isPrimitive(val)) {
return val;
}
}
toStr = input.toString;
if (isFunction(toStr)) {
val = toStr.call(input);
if (isPrimitive(val)) {
return val;
}
}
throw new TypeError();
}
// ES5 9.9
// http://es5.github.com/#x9.9
var toObject = function (o) {
if (o == null) { // this matches both null and undefined
throw new TypeError("can't convert " + o + " to object");
}
return Object(o);
};
var ToUint32 = function ToUint32(x) {
return x >>> 0;
};
}));
Raw
index.html
<html>
<body>
<script src="es5-shim-3.4.0.js"></script>
<script>
var arr = [1, 2, 3, 4];
console.log('original array is: ' + JSON.stringify(arr));
console.log('calling splice(3)');
arr.splice(3);
console.log('array is now: ' + JSON.stringify(arr));
</script>
</body>
</html>
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