Toggle input disabled attribute using jQuery
Here is my code:
$("#product1 :checkbox").click(function(){
$(this)
.closest('tr') // Find the parent row.
.find(":input[type='text']") // Find text elements in that row.
.attr('disabled',false).toggleClass('disabled') // Enab开发者_StackOverflow中文版le them.
.end() // Go back to the row.
.siblings() // Get its siblings
.find(":input[type='text']") // Find text elements in those rows.
.attr('disabled',true).removeClass('disabled'); // Disable them.
});
How do I toggle .attr('disabled',false);
?
I can't seem to find it on Google.
$('#el').prop('disabled', (i, v) => !v);
The .prop()
method accepts two arguments:
- Property name (disabled, checked, selected) anything that is either true or false
- Property value, can be:
- (empty) - returns the current value.
- boolean (true/false) - sets the property value.
- function - Is executed for each found element, the returned value is used to set the property. There are two arguments passed; the first argument is the index (0, 1, 2, increases for each found element). The second argument is the current value of the element (true/false).
So in this case, I used a function that supplied me the index (i) and the current value (v), then I returned the opposite of the current value, so the property state is reversed.
I guess to get full browser comparability disabled
should set by the value disabled
or get removed!
Here is a small plugin that I've just made:
(function($) {
$.fn.toggleDisabled = function() {
return this.each(function() {
var $this = $(this);
if ($this.attr('disabled')) $this.removeAttr('disabled');
else $this.attr('disabled', 'disabled');
});
};
})(jQuery);
Example link.
EDIT: updated the example link/code to maintaining chainability!
EDIT 2:
Based on @lonesomeday comment, here's an enhanced version:
(function($) {
$.fn.toggleDisabled = function(){
return this.each(function(){
this.disabled = !this.disabled;
});
};
})(jQuery);
$('#checkbox').click(function(){ $('#submit').attr('disabled', !$(this).attr('checked')); });
Another simple option that updates on a click of the checkbox.
HTML:
<input type="checkbox" id="checkbox/>
<input disabled type="submit" id="item"/>
jQuery:
$('#checkbox').click(function() {
if (this.checked) {
$('#item').prop('disabled', false); // If checked enable item
} else {
$('#item').prop('disabled', true); // If checked disable item
}
});
In action: link
Quite a while later, and thanks to @arne, I created this similar small function to handle where the input should be disabled AND hidden, or enabled AND shown:
function toggleInputState(el, on) {
// 'on' = true(visible) or false(hidden)
// If a field is to be shown, enable it; if hidden, disable it.
// Disabling will prevent the field's value from being submitted
$(el).prop('disabled', !on).toggle(on);
}
Then a jQuery object (such as $('input[name="something"]') ) is simply switched using:
toggleInputState(myElement, myBoolean)
This is fairly simple with the callback syntax of attr
:
$("#product1 :checkbox").click(function(){
$(this)
.closest('tr') // find the parent row
.find(":input[type='text']") // find text elements in that row
.attr('disabled',function(idx, oldAttr) {
return !oldAttr; // invert disabled value
})
.toggleClass('disabled') // enable them
.end() // go back to the row
.siblings() // get its siblings
.find(":input[type='text']") // find text elements in those rows
.attr('disabled',function(idx, oldAttr) {
return !oldAttr; // invert disabled value
})
.removeClass('disabled'); // disable them
});
精彩评论