<!DOCTYPE html>
<html>
<body>
<h2>Compare two array</h2>
<script>
var array1=[1,2,3,4,5,6,7];
var array2=[2,3,4];
array1 = array1.filter(function(val) {
return array2.indexOf(val) == -1;
});
alert(array1);
</script>
</body>
</html>
