Comparing two arrays in jquery

Question

Using this code...

var a = [\'volvo\',\'random data\'];
var b = [\'random data\'];
var unique = $.grep(a, function(element) {
    return $.inArray(element, b         


        

Answer 1

You could just iterate over a and use Array.prototype.indexOf to get the index of the element in b, if indexOf returns -1 b does not contain the element of a.

var a = [...], b = [...]
a.forEach(function(el) {
    if(b.indexOf(el) > 0) console.log(b.indexOf(el));
    else console.log("b does not contain " + el);
});