What value is returned by jquery's :checked?

Question

What value will the variable checked have if the checkbox is checked? What is its value if the checkbox is unchecked?

HTML:

<input type="checkbox" id="my_id" />

jQuery:

var checked = $('input#my_id').is(':checked');

That just what I used. I'm kind of a newbie. Is there a better way to determine if a checkbox is checked? I need to send this value via ajax to my PHP script. I thought the value was set to `true` or `false`, but that doesn't appear to be the case. — Ajay Mohite, Aug 06 '12 at 00:39
Get some more ideas at: http://jsfiddle.net/webwarrior/NJwv4/9/ — ShaunOReilly, Aug 06 '12 at 00:59
@ShaunOReilly or, a variation http://jsfiddle.net/NJwv4/30/ :D — nicosantangelo, Aug 06 '12 at 01:05

score 3 · Answer 1 · answered Aug 06 '12 at 00:43

3

I recommend you use console.log() or any way you like to check the values, but I've made an example here.

The value will be true or false

answered Aug 06 '12 at 00:43

nicosantangelo

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score 1 · Accepted Answer · answered Aug 06 '12 at 00:42

From the jQuery documentation for is.

Checks the current selection against an expression and returns true, if at least one element of the selection fits the given expression.

If no element fits, or the expression is not valid, then the response will be 'false'.

So you can be sure the answer will either be true or false.

What value is returned by jquery's :checked?

2 Answers2