<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<input type="button" name="" id="btn" value="按钮" />
<input type="button" name="btn1" id="btn1" value="按钮" />
<script type="text/javascript">
var arr = ['1', '2', '3', 'a', '1', 'a', '3', '4', 2];
var arr1 = [];
//取出不一样的
alert(noRepate(arr, arr1))
function noRepate(a, b) {
for (var i = 0; i < a.length; i++) {
if (b.indexOf(a[i]) == -1) {
b.push(a[i]);
}
}
return b;
}
</script>
</body>
</html>