Value won't assign to array (javascript)

Question

I'm using the jquery method $(this).html() to get the value of a button.

It works fine when I assign the value to a variable (like x = $(this).html();)

But won't work when I try to assign the value to an array (like expression[1] = $(this).html();)

A

// expression = array();


$(document).ready(function()
                {
                    $(".operator").click(function(){

        expression[0] = $(this).html(); //
        alert(expression[0]);           // Won't work

        // x = $(this).html();          // Works
        // alert(x);                    //


                  });
               });

What am I doing wrong?

If you want to test the code online, it is here -> http://jsfiddle.net/m44Tn/9/ — Sparky, Jan 12 '11 at 13:20

Shakti Singh · Answer 1 · 2011-01-12T13:27:32.450

3

Declare array something like this

var expression = new Array();

edited Jan 12 '11 at 13:27

answered Jan 12 '11 at 13:21

Shakti Singh

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Thanks, I saw it. The comment I posted earlier (now edited) was to Shakti Singh – Sparky Jan 12 '11 at 13:24
Don't forget the `var`. You don't want to pollute the global scope. – Alin Purcaru Jan 12 '11 at 13:26

score 3 · Accepted Answer · answered Jan 12 '11 at 13:21

3

Your array doesn't exist.
You need to create it first:

var expression = [];   //Array literal

answered Jan 12 '11 at 13:21

SLaks

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Value won't assign to array (javascript)

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