Disable/Enable Input when checkbox is clicked jQuery

Question

I'm attempted to only allow the submit button in a form to be enabled when a user has checked off a checkbox. I've gotten the button to start disabled, then become enabled when the checkbox is initially clicked on, but if I then uncheck the checkbox, the button doesn't become re-enabled.

HTML:

<input type="checkbox" id="waivercheck">
<input class="submit join-button" type="submit" value="Join Now" id="joinevent" disabled>

Script:

$(document).ready(function() {
    $('#waivercheck').click(function(){
        if($(this).checked){
            $('#joinevent').prop("disabled",false);   
        } else {
            $('#joinevent').prop("disabled",true);
        }
    });
});

Can anyone help?

Ismail RBOUH · Accepted Answer · 2016-07-09 01:17:42Z

2

You can access the checkbox status via this.checked and not $(this).checked. And I recommend using the change event.

$(document).ready(function() {
    $('#waivercheck').change(function(){        
        if(this.checked){
            $('#joinevent').prop("disabled",false);   
        } else {
            $('#joinevent').prop("disabled",true);
        }
    });
});

Demo: https://jsfiddle.net/rbnndz23/

edited Jul 9, 2016 at 1:17

answered Jul 9, 2016 at 1:12

Ismail RBOUH

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Comments

charlietfl · Accepted Answer · 2016-07-09 01:17:34Z

0

Your issue is with the conditional.

A jQuery object doesn't have a checked property but the DOM element itself does

Instead of

if($(this).checked)

Can do

// native element has checked property
if(this.checked)

Or

// jQuery is() with pseudo selector
if($(this).is(':checked'))

answered Jul 9, 2016 at 1:17

charlietfl

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Comments

Aer0 · Accepted Answer · 2016-07-09 01:18:23Z

0

You don't need to use $(this).checked. Instead try using this.checked. See here.

answered Jul 9, 2016 at 1:18

Aer0

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