| /*! | |
| * A minimal html entities decoder/encoder using DOM. | |
| * gist.github.com/englishextra/737e35d19bcb4ee62ab85c9f9b292842 | |
| * modified github.com/jussi-kalliokoski/htmlentities.js | |
| * see issue github.com/jussi-kalliokoski/htmlentities.js/issues/1 | |
| * htmlentities.encode('<&>'); returns '<&>'; | |
| * htmlentities.decode('<&>'); returns '<&>'; | |
| * htmlentities is a shorthand for htmlentities.encode | |
| */ | |
| var htmlentities = (function (a) { |
| /*! | |
| * Escape strings for use as JavaScript string literals | |
| * gist.github.com/englishextra/3053a4dc18c2de3c80ce7d26207681e0 | |
| * modified github.com/joliss/js-string-escape | |
| */ | |
| jsStringEscape = function (b) { | |
| return ("" + b).replace(/["'\\\n\r\u2028\u2029]/g, function (a) { | |
| switch (a) { | |
| case '"': | |
| case "'": |
| /*! | |
| * Accurate Javascript setInterval replacement | |
| * gist.github.com/manast/1185904 | |
| * gist.github.com/englishextra/f721a0c4d12aa30f74c2e089370e09eb | |
| * minified with closure-compiler.appspot.com/home | |
| * var timer = new interval(50, function(){ if(1===1){timer.stop(), timer = 0;}}); timer.run(); | |
| * The handle will be a number that isn't equal to 0; therefore, 0 makes a handy flag value for "no timer set". | |
| * stackoverflow.com/questions/5978519/setinterval-and-how-to-use-clearinterval | |
| */ | |
| function interval(d,f){this.baseline=void 0;this.run=function(){void 0===this.baseline&&(this.baseline=(new Date).getTime());f();var c=(new Date).getTime();this.baseline+=d;var b=d-(c-this.baseline);0>b&&(b=0);(function(d){d.timer=setTimeout(function(){d.run(c)},b)}(this))};this.stop=function(){clearTimeout(this.timer)}}; |
| /*! | |
| * setImmediate polyfill for the browser and node | |
| * modified github.com/taylorhakes/setAsap | |
| * added: !window.setImmediate&&(window.setImmediate=window.setAsap); | |
| * gist.github.com/englishextra/f4a5b2f47573af15d1ed206ac240c8d7 | |
| * This is an alternative to setTimeout(fn, 0), which behaves like setTimeout(fn, 4). | |
| * setAsap will execute immediately. It has unmatched performance and is extremely lightweight. | |
| * nczonline.net/blog/2011/09/19/script-yielding-with-setimmediate/ | |
| * setAsap(function() { | |
| * // do something async |
This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.
Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:
getTweetsFor("domenic", function (err, results) {
// the rest of your code goes here.
An updated guide/collection of guides on how to access JSON data with JavaScript
Original Question on Stack Exchange.
For reading the external Local JSON file (data.json) using java script
| /*! | |
| * truncate a text or line with ellipsis | |
| * stackoverflow.com/questions/4700226/i-want-to-truncate-a-text-or-line-with-ellipsis-using-javascript | |
| * gist.github.com/englishextra/b4939b3430da4b55d731201460d3decb | |
| */ | |
| function truncString(str, max, add) { | |
| add = add || "\u2026"; | |
| return (typeof str === "string" && str.length > max ? str.substring(0, max) + add : str); | |
| } |
| // document.ready | |
| document.addEventListener("DOMContentLoaded", function() { | |
| // your code | |
| }, false); | |
| // select div | |
| var element = document.querySelector("div"); |
| /*! | |
| * return an array of values that match on a certain key | |
| * techslides.com/how-to-parse-and-search-json-in-javascript | |
| * gist.github.com/englishextra/872269c30d7cb2d10e3c3babdefc37b4 | |
| * var jpr = JSON.parse(response); | |
| * for (var i = 0; i < jpr.length; i++) { | |
| * var o = jpr[i], | |
| * t = getJsonKeyValues(o, "label"), | |
| * p = getJsonKeyValues(o, "link"); | |
| * crel(select, crel("option", { |
| /*! | |
| * escape string for HTML attributes and titles | |
| * gist.github.com/englishextra/214582c0f3ba64be19c655f57f11241d | |
| */ | |
| function escapeHtml(s) { | |
| return s = s.replace(/[<!="'\/>&]/g, function (s) { | |
| return { | |
| "<" : "<", | |
| "!" : "!", | |
| "=" : "=", |