Get value of multiple choices checkboxes Javascript

Question

I'm using the onsubmit event on a form to verify it before it is sent. I'm having issues getting the value of checkboxes that allows multiple choice.

Html:

<input type="checkbox" name="question5[]" value="1" />
<input type="checkbox" name="question5[]" value="2" />

Javascript:

var form = document.forms['questionnaire'];
var q5 = form.elements["question5"].value;

When I try to get the value of this question I'm not able to retrieve it the same way I did for the other fields. I'm wondering what is the correct way to get the value of those checkboxes since I can't retrieve it like a radio or text input.

Quentin · Accepted Answer · 2013-09-13 14:38:54Z

1

The name of the field is question5[] not question5 and since you have multiple of them, you will get a NodeList (which is like an Array) back, not a single Element.

answered Sep 13, 2013 at 14:38

Quentin

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1 Comment

oliboon Over a year ago

I tried var q5 = form.elements["question5"][0].value; and var q5 = form.elements["question5[]"].value; but I didn't try to combine those. It works now.

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