Check if an array item is set in JS

Question

I\'ve got an array

    var assoc_pagine = new Array();
    assoc_pagine[\"home\"]=0;
    assoc_pagine[\"about\"]=1;
    assoc_pagine[\"work\"]=2;

Answer 1

This worked for me

if (assoc_pagine[var] != undefined) {

instead this

if (assoc_pagine[var] != "undefined") {