Modernizr.js
介绍：Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.
地址：https://github.com/Modernizr/Modernizr
http://modernizr.com/docs/#installing
es5-shim.js：
介绍：ECMAScript 5 compatibility shims for legacy JavaScript engines
地址：https://github.com/kriskowal/es5-shim
es5-safe.js
github地址访问不了
贴出源码：
(function(factory) { if (typeof define === 'function') { define('#es5-safe/0.9.2/es5-safe-debug', [], factory); }else { factory(); }})(function() {/** * @preserve The safe part of es5-shim v0.9.2 | https://github.com/seajs/dew/tree/master/src/es5-safe | MIT Licensed *//** * @fileoverview Provides compatibility shims so that legacy JavaScript * engines behave as closely as possible to ES5. * * @author lifesinger@gmail.com (Frank Wang) * * @see Thanks to: * - http://es5.github.com/ * - http://kangax.github.com/es5-compat-table/ * - https://github.com/kriskowal/es5-shim * - http://perfectionkills.com/extending-built-in-native-objects-evil-or-not/ * - https://gist.github.com/1120592 * - https://code.google.com/p/v8/ */(function() { var OP = Object.prototype; var AP = Array.prototype; var FP = Function.prototype; var SP = String.prototype; var hasOwnProperty = OP.hasOwnProperty; var slice = AP.slice; /*---------------------------------------* * Function *---------------------------------------*/ // ES-5 15.3.4.5 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/bind FP.bind || (FP.bind = function (that) { var target = this; // If IsCallable(func) is false, throw a TypeError exception. if (typeof target !== 'function') { throw new TypeError('Bind must be called on a function'); } var boundArgs = slice.call(arguments, 1); function bound() { // Called as a constructor. if (this instanceof bound) { var self = createObject(target.prototype); var result = target.apply( self, boundArgs.concat(slice.call(arguments)) ); return Object(result) === result ? result : self; } // Called as a function. else { return target.apply( that, boundArgs.concat(slice.call(arguments)) ); } } // NOTICE: The function.length is not writable. //bound.length = Math.max(target.length - boundArgs.length, 0); return bound; }); // Helpers function createObject(proto) { var o; if (Object.create) { o = Object.create(proto); } else { /** @constructor */ function F() {} F.prototype = proto; o = new F(); } return o; } /*---------------------------------------* * Object *---------------------------------------*/ // http://ejohn.org/blog/ecmascript-5-objects-and-properties/ // ES5 15.2.3.14 // http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Object/keys // https://developer.mozilla.org/en/ECMAScript_DontEnum_attribute // http://msdn.microsoft.com/en-us/library/adebfyya(v=vs.94).aspx Object.keys || (Object.keys = (function () { var hasDontEnumBug = !{toString:''}.propertyIsEnumerable('toString'); var DontEnums = [ 'toString', 'toLocaleString', 'valueOf', 'hasOwnProperty', 'isPrototypeOf', 'propertyIsEnumerable', 'constructor' ]; var DontEnumsLength = DontEnums.length; return function (o) { if (o !== Object(o)) { throw new TypeError(o + ' is not an object'); } var result = []; for (var name in o) { if (hasOwnProperty.call(o, name)) { result.push(name); } } if (hasDontEnumBug) { for (var i = 0; i < DontEnumsLength; i++) { if (hasOwnProperty.call(o, DontEnums[i])) { result.push(DontEnums[i]); } } } return result; }; })()); /*---------------------------------------* * Array *---------------------------------------*/ // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array // https://github.com/kangax/fabric.js/blob/gh-pages/src/util/lang_array.js // ES5 15.4.3.2 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray Array.isArray || (Array.isArray = function (obj) { return OP.toString.call(obj) === '[object Array]'; }); // ES5 15.4.4.18 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/foreach AP.forEach || (AP.forEach = function (fn, context) { for (var i = 0, len = this.length >>> 0; i < len; i++) { if (i in this) { fn.call(context, this[i], i, this); } } }); // ES5 15.4.4.19 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map AP.map || (AP.map = function (fn, context) { var len = this.length >>> 0; var result = new Array(len); for (var i = 0; i < len; i++) { if (i in this) { result[i] = fn.call(context, this[i], i, this); } } return result; }); // ES5 15.4.4.20 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter AP.filter || (AP.filter = function (fn, context) { var result = [], val; for (var i = 0, len = this.length >>> 0; i < len; i++) { if (i in this) { val = this[i]; // in case fn mutates this if (fn.call(context, val, i, this)) { result.push(val); } } } return result; }); // ES5 15.4.4.16 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/every AP.every || (AP.every = function (fn, context) { for (var i = 0, len = this.length >>> 0; i < len; i++) { if (i in this && !fn.call(context, this[i], i, this)) { return false; } } return true; }); // ES5 15.4.4.17 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/some AP.some || (AP.some = function (fn, context) { for (var i = 0, len = this.length >>> 0; i < len; i++) { if (i in this && fn.call(context, this[i], i, this)) { return true; } } return false; }); // ES5 15.4.4.21 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce AP.reduce || (AP.reduce = function (fn /*, initial*/) { if(typeof fn !== 'function') { throw new TypeError(fn + ' is not an function'); } var len = this.length >>> 0, i = 0, result; if (arguments.length > 1) { result = arguments[1]; } else { do { if (i in this) { result = this[i++]; break; } // if array contains no values, no initial value to return if (++i >= len) { throw new TypeError('reduce of empty array with on initial value'); } } while (true); } for (; i < len; i++) { if (i in this) { result = fn.call(null, result, this[i], i, this); } } return result; }); // ES5 15.4.4.22 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight AP.reduceRight || (AP.reduceRight = function (fn /*, initial*/) { if(typeof fn !== 'function') { throw new TypeError(fn + ' is not an function'); } var len = this.length >>> 0, i = len - 1, result; if (arguments.length > 1) { result = arguments[1]; } else { do { if (i in this) { result = this[i--]; break; } // if array contains no values, no initial value to return if (--i < 0) throw new TypeError('reduce of empty array with on initial value'); } while (true); } for (; i >= 0; i--) { if (i in this) { result = fn.call(null, result, this[i], i, this); } } return result; }); // ES5 15.4.4.14 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/indexOf AP.indexOf || (AP.indexOf = function (value, from) { var len = this.length >>> 0; from = Number(from) || 0; from = Math[from < 0 ? 'ceil' : 'floor'](from); if (from < 0) { from = Math.max(from + len, 0); } for (; from < len; from++) { if (from in this && this[from] === value) { return from; } } return -1; }); // ES5 15.4.4.15 // https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/indexOf AP.lastIndexOf || (AP.lastIndexOf = function (value, from) { var len = this.length >>> 0; from = Number(from) || len - 1; from = Math[from < 0 ? 'ceil' : 'floor'](from); if (from < 0) { from += len; } from = Math.min(from, len - 1); for (; from >= 0; from--) { if (from in this && this[from] === value) { return from; } } return -1; }); /*---------------------------------------* * String *---------------------------------------*/ // ES5 15.5.4.20 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/trim // http://blog.stevenlevithan.com/archives/faster-trim-javascript // http://jsperf.com/mega-trim-test SP.trim || (SP.trim = (function () { // http://perfectionkills.com/whitespace-deviations/ var whiteSpaces = [ '\\s', //'0009', // 'HORIZONTAL TAB' //'000A', // 'LINE FEED OR NEW LINE' //'000B', // 'VERTICAL TAB' //'000C', // 'FORM FEED' //'000D', // 'CARRIAGE RETURN' //'0020', // 'SPACE' '00A0', // 'NO-BREAK SPACE' '1680', // 'OGHAM SPACE MARK' '180E', // 'MONGOLIAN VOWEL SEPARATOR' '2000-\\u200A', //'2000', // 'EN QUAD' //'2001', // 'EM QUAD' //'2002', // 'EN SPACE' //'2003', // 'EM SPACE' //'2004', // 'THREE-PER-EM SPACE' //'2005', // 'FOUR-PER-EM SPACE' //'2006', // 'SIX-PER-EM SPACE' //'2007', // 'FIGURE SPACE' //'2008', // 'PUNCTUATION SPACE' //'2009', // 'THIN SPACE' //'200A', // 'HAIR SPACE' '200B', // 'ZERO WIDTH SPACE (category Cf) '2028', // 'LINE SEPARATOR' '2029', // 'PARAGRAPH SEPARATOR' '202F', // 'NARROW NO-BREAK SPACE' '205F', // 'MEDIUM MATHEMATICAL SPACE' '3000' // 'IDEOGRAPHIC SPACE' ].join('\\u'); var trimLeftReg = new RegExp('^[' + whiteSpaces + ']+'); var trimRightReg = new RegExp('[' + whiteSpaces + ']+$'); return function() { return String(this).replace(trimLeftReg, '').replace(trimRightReg, ''); } })()); /*---------------------------------------* * Date *---------------------------------------*/ // ES5 15.9.4.4 // https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date/now Date.now || (Date.now = function () { return +new Date; });})();});