how to prevent duplicate in array push in angularjs

Question

my code is like this :

var arr = []; arr.push(item1,item2); 

so arr will contain like: ["name","thing1"]

But i got problem when pushing element with same exact value, how do i filter same element value but still accepting update/changes. JSFIDDLE

Answer 1

You can use arr.indexOf which returns -1 if it is not found, so you can add it then.

e.g.

if (arr.indexOf(item) == -1) {     arr.push(item); } 

However, this does not work in old browsers...

JQuery has a method ($.indexOf) that works in every browser, even very old ones.