<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
</head>
<body>
<script type="text/javascript">
var flag = false;
$(function() {
var arr1 = [1, 2, 3];
var arr2 = [3, 4];
inArr(arr1, arr2);
if (flag) {
console.log("exists");
} else {
console.log("no exists")
};
});
//判断数组1/数组2是否存在交集
function inArr(arr1, arr2) {
$.each(arr1, function(index, obj) {
if ($.inArray(obj, arr2) > -1) {
flag = true;
}
});
}
</script>
</body>
</html>
