Ie8 operation error

[viaco2ove]

Problem solving way:

//In the Array on the prototype chain extension indexOf method (function($){
if(!Array.prototype.indexOf){ Array.prototype.indexOf = function(val){ var value = this; for(var i =0; i < value.length; i++){ if(value[i] == val) return i; } return -1; }; } ...})(jQuery);