javascript - checkbox enable onload to display other elements

Ok, The question here is to allow a form to grab information from a mysql settings, like enabled or disabled. then a checkbox is going to determine if the the 3 following text fields (box123) are going to be enabled or disabled depending on that request.

<script src=".10.2.min.js"></script>
<script src="test.js"></script>
</head>
<body>
    <form>
        <input type="checkbox" name="detailsgiven" id="checker" checked=checked>Enabled?
        <br>
        <input type='text' name="details" id="tb1" value='box1'>
        <br>
        <input type='text' name="details" id="tb2" value='box2'>
        <br>
        <input type='text' name="details" id="tb3" value='box3'>
        <br>
    </form>
</body>

</html

test.js Jquery code which allows the check to be enabled or disabled depending on the activation varible

toggleInputs($('#checker'));

$('#checker').click(function () {
    toggleInputs($(this));
});

function toggleInputs(element) {
    if (element.prop('checked')) {
        $('#tb1').prop('disabled', false);
        $('#tb2').prop('disabled', false);
        $('#tb3').prop('disabled', false);
    } else {
        $('#tb1').prop('disabled', true);
        $('#tb2').prop('disabled', true);
        $('#tb3').prop('disabled', true);
    }
}

<script src="http://code.jquery./jquery-1.10.2.min.js"></script>
<script src="test.js"></script>
</head>
<body>
    <form>
        <input type="checkbox" name="detailsgiven" id="checker" checked=checked>Enabled?
        <br>
        <input type='text' name="details" id="tb1" value='box1'>
        <br>
        <input type='text' name="details" id="tb2" value='box2'>
        <br>
        <input type='text' name="details" id="tb3" value='box3'>
        <br>
    </form>
</body>

</html

test.js Jquery code which allows the check to be enabled or disabled depending on the activation varible

toggleInputs($('#checker'));

$('#checker').click(function () {
    toggleInputs($(this));
});

function toggleInputs(element) {
    if (element.prop('checked')) {
        $('#tb1').prop('disabled', false);
        $('#tb2').prop('disabled', false);
        $('#tb3').prop('disabled', false);
    } else {
        $('#tb1').prop('disabled', true);
        $('#tb2').prop('disabled', true);
        $('#tb3').prop('disabled', true);
    }
}

Share Improve this question edited Sep 1, 2013 at 4:37 Arturs 1,2545 gold badges21 silver badges28 bronze badges asked Sep 1, 2013 at 1:36 Outdated Computer Tech 2,0264 gold badges26 silver badges39 bronze badges

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2 Answers 2

Sorted by: Reset to default 3

While you've already accepted an answer, I feel that answer over-plicated the solution somewhat, and left in unnecessary redundancy. That said, I'd suggest the following approach:

function toggleInputs(element) {
    /* using a multiple selector
       checking whether the check-box is checked or not using ':is()`,
       which returns a Boolean */
    $('#tb1, #tb2, #tb3').prop('disabled', element.is(':checked'));
}

$('#checker').change(function(){
    // event-handling (reacting to the change event)
    toggleInputs($(this));
    /* the next change() (without arguments) triggers the change event,
       and, therefore, the event-handling */
}).change();

JS Fiddle demo.

Amended the above function (using the ! operator) to have the fields editable while the input is checked, and disabled while the input is unchecked:

function toggleInputs(element) {
    $('#tb1, #tb2, #tb3').prop('disabled', !element.is(':checked'));
}

$('#checker').change(function(){
    toggleInputs($(this));
}).change();

JS Fiddle demo.

References:

:checked selector.
change().
is().
prop().

Here you go... Actually using jquery as your question asked:

HTML

<form>
    <input type="checkbox" name="detailsgiven" id="checker" checked=checked>Enabled?
    <br>
    <input type='text' name="details" id="tb1" value='box1'>
    <br>
    <input type='text' name="details" id="tb2" value='box2'>
    <br>
    <input type='text' name="details" id="tb3" value='box3'>
    <br>
</form>

JavaScript

$(document).ready(function() {
   toggleInputs($('#checker'));
   $('#checker').click(function () {
       toggleInputs($(this));
    });
});

function toggleInputs(element) {
    if (element.prop('checked')) {
        $('#tb1').prop('disabled', false);
        $('#tb2').prop('disabled', false);
        $('#tb3').prop('disabled', false);
    } else {
        $('#tb1').prop('disabled', true);
        $('#tb2').prop('disabled', true);
        $('#tb3').prop('disabled', true);
    }
}

http://jsfiddle/Q9Lg4/40/

When the initial call is made the elements in the body are not yet loaded. You can wrap the first call to toggleInputs in a JQuery ready event function or place the script tag that includes test.js after the form.

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2 Answers 2

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