js数组中去除重复值

方法一

var arr = ["123","123","123","123","sfsdf","123","345","123","123","345","456","567","sdc"];
var str = [];
for(var i = 0,len = arr.length;i < len;i++){
! RegExp(arr[i],"g").test(str.join(",")) && (str.push(arr[i]));
}
alert(str);highlight: javascript

方法二

var pureMulti1=function(arr){
var obj={};
var a = [];
for(var i=0,l=arr.length;iif(!((arr[i]+"") in obj)){
a.push(arr[i]);
}
obj[arr[i]]="";
}
return a;
}