Created
October 31, 2011 16:20
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indexOf prototype for IE 9-
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| /** | |
| * Refs: | |
| * http://nootn.com/blog/Develop/35/ | |
| * http://soledadpenades.com/2007/05/17/arrayindexof-in-internet-explorer/#comment-57199 | |
| * http://ecma262-5.com/ELS5_HTML.htm#Section_15.4.4.14 | |
| */ | |
| if (!Array.prototype.indexOf) { | |
| Array.prototype.indexOf = function(el, index) { | |
| var n = this.length >>> 0, i = ~~index; | |
| if (i < 0 ) i += n; | |
| for (; i < n; i++) if (i in this && this[i] === el) return i; | |
| return -1; | |
| } | |
| } |
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@sofish 看看这个 :) http://soledadpenades.com/2007/05/17/arrayindexof-in-internet-explorer/#comment-57199