Compare two Javascript Arrays and remove Duplicates

Question

It is working well is there any other better way to remove duplicates from one array if it has elements of another array ?.

<script> var array1 = new Array("a","b","c","d","e","f"); var array2 = new Array("c","e");  for (var i = 0; i<array2.length; i++) {     var arrlen = array1.length;     for (var j = 0; j<arrlen; j++) {         if (array2[i] == array1[j]) {             array1 = array1.slice(0, j).concat(array1.slice(j+1, arrlen));         }     } } alert(array1);  </script> 

Answer 1

array1 = array1.filter(function(val) {   return array2.indexOf(val) == -1; }); 

Or, with the availability of ES6:

array1 = array1.filter(val => !array2.includes(val)); 

filter() reference here

indexOf() reference here

includes() reference here