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create "array.indexOf" function in IE

/ Published in: JavaScript
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  1. // create "Array.indexOf" function in IE
  2. if(!Array.prototype.indexOf){
  3.     Array.prototype.indexOf=function(obj,start){
  4.         for(var i=(start||0),j=this.length;i<j;i++){
  5.             if(this[i]==obj){return i;}
  6.         }
  7.         return -1;
  8.     }
  9. }

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