gracefullight

// JavaScript syntax to set a default value
var text = someString || "default text";
var text2 = someString || someString2 || "default text2";

gracefullight

var frozenObject = {
    value1 : 1,
    value2 : 2
};
 
Object.freeze(frozenObject);
console.log(Object.isFrozen(frozenObject)); // true
 
// 삭제 불가
delete frozenObject.value1;

gracefullight

var sealedObject = {
    value1 : 1,
    value2 : 2
};
 
Object.seal(sealedObject);
console.log(Object.isSealed(sealedObject)); // true
 
// 삭제 불가
delete sealedObject.value1;

gracefullight

var preventExtensionObject = {
    value1 : 1,
    value2 : 2
};
 
Object.preventExtensions(preventExtensionObject);
console.log(Object.isExtensible(preventExtensionObject)); // false
 
// 삭제 가능
delete preventExtensionObject.value1;

gracefullight

function deepFreeze(obj){
    if (!Object.isFrozen(obj)){
        Object.freeze(obj);
    }

    for (var key in obj) {
        if ({}.hasOwnProperty.call(obj, key) || !(typeof obj[key] === 'function' || typeof obj[key] === 'object' && !!obj[key])) {
            continue;
        }

gracefullight

function jsonp(url, callback) {
    var callbackName = 'jsonp_' + Math.round(100000 * Math.random());
    window[callbackName] = function(data) {
        delete window[callbackName];
        document.body.removeChild(script);
        callback(data);
    };
    var script = document.createElement('script');
    script.src = url + (url.indexOf('?') >= 0 ? '&' : '?') + 'callback=' + callbackName;
    document.body.appendChild(script);

gracefullight

(function (global, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD 환경
        define(['exports', 'jquery'], factory);
    } else if (typeof exports === 'object' && typeof exports.nodeName !== 'string') {
        // CommonJS 환경
        factory(exports, require('jquery'));
    } else {
        // 일반 브라우저
        factory((global.module1 = global.module1 || {}), global.$);

gracefullight

(function (global, factory) {
    if (typeof define === 'function' && define.amd) {
        define(['exports'], factory);
    } else if (typeof exports === 'object' && typeof exports.nodeName !== 'string') {
        factory(exports);
    } else {
        factory((global.module1 = global.module1 || {}));
    }
}(this, function (exports) {
    exports.action = function () {};

gracefullight

(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
    typeof define === 'function' && define.amd ? define(['exports'], factory) :
    (factory((global.module1 = global.module1 || {})));
}(this, (function (exports) {
    exports.action = function () {};
}));

gracefullight

var throttleFunction = (function() {
	'use strict';

	var timeWindow = 500; // 여기에 시간(ms)을 지정한다
	var lastExecution = new Date((new Date()).getTime() - timeWindow);
    // ES6 이하일 경우 ...args에 호출할 parameter 만큼 준다 function(arg1, arg2...)
	var throttleFunction = function(...args) {
		 // 여기에 로직을 구현한다
	};