How to toggle the check state of a radio input element when pressed?
How to (un) check a radio input element when the element or its container is clicked?
I've tried the code below, but it doesn't turn off the radio.
HTML:
<div class="is">
<label><input type="radio" name="check" class="il-radio" /> Is </label>
<img src="picture" />
</div>
JQuery
$(".is label, .is ").click(function () {
if (!$(this).find(".il-radio").attr("checked")) {
$(this).find(".il-radio").attr("checked", "checked");
} else if ($(this).find(".il-radio").attr("checked") == "checked") {
$(this).find(".il-radio").removeAttr("checked");
}
});
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3 answers
You must prevent default behavior. Currently, when pressed, the following happens:
-
click
event is fired for container (div.is
). -
click
the event fires for the label. - Since your function is to toggle state and the event listener is called twice, the result is that nothing happens.
Corrected code ( http://jsfiddle.net/nHvsf/3/ ):
$(".is").click(function(event) {
var radio_selector = 'input[type="radio"]',
$radio;
// Ignore the event when the radio input is clicked.
if (!$(event.target).is(radio_selector)) {
$radio = $(this).find(radio_selector);
// Prevent the event to be triggered
// on another element, for the same click
event.stopImmediatePropagation();
// We manually check the box, so prevent default
event.preventDefault();
$radio.prop('checked', !$radio.is(':checked'));
}
});
$(".il-radio").on('change click', function(event) {
// The change event only fires when the checkbox state changes
// The click event always fires
// When the radio is already checked, this event will fire only once,
// resulting in an unchecked checkbox.
// When the radio is not checked already, this event fires twice
// so that the state does not change
this.checked = !this.checked;
});
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