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175 lines
5.1 KiB
175 lines
5.1 KiB
// Production steps of ECMA-262, Edition 5, 15.4.4.14 |
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// Reference: http://es5.github.io/#x15.4.4.14 |
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if (!Array.prototype.indexOf) { |
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Array.prototype.indexOf = function (searchElement, fromIndex) { |
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|
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var k; |
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|
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// 1. Let o be the result of calling ToObject passing |
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// the this value as the argument. |
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if (this == null) { |
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throw new TypeError('"this" is null or not defined'); |
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} |
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var o = Object(this); |
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// 2. Let lenValue be the result of calling the Get |
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// internal method of o with the argument "length". |
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// 3. Let len be ToUint32(lenValue). |
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var len = o.length >>> 0; |
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// 4. If len is 0, return -1. |
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if (len === 0) { |
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return -1; |
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} |
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// 5. If argument fromIndex was passed let n be |
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// ToInteger(fromIndex); else let n be 0. |
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var n = fromIndex | 0; |
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// 6. If n >= len, return -1. |
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if (n >= len) { |
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return -1; |
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} |
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// 7. If n >= 0, then Let k be n. |
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// 8. Else, n<0, Let k be len - abs(n). |
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// If k is less than 0, then let k be 0. |
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k = Math.max(n >= 0 ? n : len - Math.abs(n), 0); |
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// 9. Repeat, while k < len |
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while (k < len) { |
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// a. Let Pk be ToString(k). |
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// This is implicit for LHS operands of the in operator |
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// b. Let kPresent be the result of calling the |
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// HasProperty internal method of o with argument Pk. |
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// This step can be combined with c |
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// c. If kPresent is true, then |
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// i. Let elementK be the result of calling the Get |
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// internal method of o with the argument ToString(k). |
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// ii. Let same be the result of applying the |
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// Strict Equality Comparison Algorithm to |
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// searchElement and elementK. |
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// iii. If same is true, return k. |
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if (k in o && o[k] === searchElement) { |
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return k; |
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} |
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k++; |
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} |
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return -1; |
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}; |
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} |
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if (!Array.prototype.lastIndexOf) { |
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Array.prototype.lastIndexOf = function (searchElement /*, fromIndex*/) { |
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'use strict'; |
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if (this === void 0 || this === null) { |
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throw new TypeError(); |
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} |
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var n, k, |
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t = Object(this), |
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len = t.length >>> 0; |
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if (len === 0) { |
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return -1; |
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} |
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n = len - 1; |
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if (arguments.length > 1) { |
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n = Number(arguments[1]); |
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if (n != n) { |
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n = 0; |
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} |
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else if (n != 0 && n != (1 / 0) && n != -(1 / 0)) { |
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n = (n > 0 || -1) * Math.floor(Math.abs(n)); |
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} |
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} |
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for (k = n >= 0 |
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? Math.min(n, len - 1) |
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: len - Math.abs(n); k >= 0; k--) { |
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if (k in t && t[k] === searchElement) { |
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return k; |
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} |
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} |
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return -1; |
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}; |
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} |
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/** |
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* 特殊情况 |
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* Created by wang on 15/6/23. |
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*/ |
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//解决console未定义问题 guy |
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window.console = window.console || (function () { |
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var c = {}; |
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c.log = c.warn = c.debug = c.info = c.error = c.time = c.dir = c.profile |
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= c.clear = c.exception = c.trace = c.assert = function () { |
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}; |
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return c; |
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})(); |
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/* |
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* 前端缓存 |
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*/ |
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window.localStorage || (window.localStorage = { |
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items: {}, |
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setItem: function (k, v) { |
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BI.Cache.addCookie(k, v); |
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}, |
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getItem: function (k) { |
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return BI.Cache.getCookie(k); |
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}, |
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removeItem: function (k) { |
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BI.Cache.deleteCookie(k); |
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}, |
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key: function () { |
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}, |
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clear: function () { |
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this.items = {}; |
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} |
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});if (typeof Set !== 'undefined' && Set.toString().match(/native code/)) { |
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} else { |
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Set = function () { |
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this.set = {} |
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}; |
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Set.prototype.has = function (key) { |
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return this.set[key] !== undefined; |
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}; |
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Set.prototype.add = function (key) { |
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this.set[key] = 1 |
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}; |
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Set.prototype.clear = function () { |
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this.set = {} |
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}; |
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}//修复ie9下sort方法的bug |
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;!function (window) { |
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var ua = window.navigator.userAgent.toLowerCase(), |
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reg = /msie|applewebkit.+safari/; |
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if (reg.test(ua)) { |
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var _sort = Array.prototype.sort; |
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Array.prototype.sort = function (fn) { |
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if (!!fn && typeof fn === 'function') { |
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if (this.length < 2) { |
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return this; |
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} |
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var i = 0, j = i + 1, l = this.length, tmp, r = false, t = 0; |
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for (; i < l; i++) { |
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for (j = i + 1; j < l; j++) { |
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t = fn.call(this, this[i], this[j]); |
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r = (typeof t === 'number' ? t : |
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!!t ? 1 : 0) > 0; |
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if (r === true) { |
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tmp = this[i]; |
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this[i] = this[j]; |
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this[j] = tmp; |
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} |
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} |
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} |
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return this; |
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} else { |
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return _sort.call(this); |
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} |
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}; |
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} |
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}(window); |