<script type="text/javascript"> Array.prototype.unique = function() { var a = {};//一个空的数组; for(var i=0; i<this.length; i++) { if(typeof a[this[i]] == "undefined") a[this[i]] = 1; } this.length = 0; for(var i in a) this[this.length] = i; return this; } var a = [1,2,4,12,5,3,5,4,8,5,2,8,8,1,5]; alert(a +"/n"+ a.unique()); </script>
