Coffeescript input not disabled on page load [duplicate] - ruby-on-rails

Question

$input.disabled = true;
or
$input.disabled = "disabled";
Which is the standard way? And, conversely, how do you enable a disabled input?

Answer 1

jQuery 1.6+
To change the disabled property you should use the .prop() function.
$("input").prop('disabled', true);
$("input").prop('disabled', false);
jQuery 1.5 and below
The .prop() function doesn't exist, but .attr() does similar:
Set the disabled attribute.
$("input").attr('disabled','disabled');
To enable again, the proper method is to use .removeAttr()
$("input").removeAttr('disabled');
In any version of jQuery
You can always rely on the actual DOM object and is probably a little faster than the other two options if you are only dealing with one element:
// assuming an event handler thus 'this'
this.disabled = true;
The advantage to using the .prop() or .attr() methods is that you can set the property for a bunch of selected items.
Note: In 1.6 there is a .removeProp() method that sounds a lot like removeAttr(), but it SHOULD NOT BE USED on native properties like 'disabled' Excerpt from the documentation:
Note: Do not use this method to remove native properties such as checked, disabled, or selected. This will remove the property completely and, once removed, cannot be added again to element. Use .prop() to set these properties to false instead.
In fact, I doubt there are many legitimate uses for this method, boolean props are done in such a way that you should set them to false instead of "removing" them like their "attribute" counterparts in 1.5

Answer 2

Just for the sake of new conventions && making it adaptable going forward (unless things change drastically with ECMA6(????):
$(document).on('event_name', '#your_id', function() {
$(this).removeAttr('disabled');
});
and
$(document).off('event_name', '#your_id', function() {
$(this).attr('disabled','disabled');
});

Answer 3

// Disable #x
$( "#x" ).prop( "disabled", true );
// Enable #x
$( "#x" ).prop( "disabled", false );
Sometimes you need to disable/enable the form element like input or textarea. Jquery helps you to easily make this with setting disabled attribute to "disabled".
For e.g.:
//To disable
$('.someElement').attr('disabled', 'disabled');
To enable disabled element you need to remove "disabled" attribute from this element or empty it's string. For e.g:
//To enable
$('.someElement').removeAttr('disabled');
// OR you can set attr to ""
$('.someElement').attr('disabled', '');
reference: http://garmoncheg.blogspot.fr/2011/07/how-to-disableenable-element-with.html

Answer 4

$("input")[0].disabled = true;
or
$("input")[0].disabled = false;

Answer 5

There are many ways using them you can enable/disable any element :
Approach 1
$("#txtName").attr("disabled", true);
Approach 2
$("#txtName").attr("disabled", "disabled");
If you are using jQuery 1.7 or higher version then use prop(), instead of attr().
$("#txtName").prop("disabled", "disabled");
If you wish to enable any element then you just have to do opposite of what you did to make it disable. However jQuery provides another way to remove any attribute.
Approach 1
$("#txtName").attr("disabled", false);
Approach 2
$("#txtName").attr("disabled", "");
Approach 3
$("#txtName").removeAttr("disabled");
Again, if you are using jQuery 1.7 or higher version then use prop(), instead of attr(). That's is. This is how you enable or disable any element using jQuery.

Answer 6

Use like this,
$( "#id" ).prop( "disabled", true );
$( "#id" ).prop( "disabled", false );

Answer 7

You can put this somewhere global in your code:
$.prototype.enable = function () {
$.each(this, function (index, el) {
$(el).removeAttr('disabled');
});
}
$.prototype.disable = function () {
$.each(this, function (index, el) {
$(el).attr('disabled', 'disabled');
});
}
And then you can write stuff like:
$(".myInputs").enable();
$("#otherInput").disable();

Answer 8

If you just want to invert the current state (like a toggle button behaviour):
$("input").prop('disabled', ! $("input").prop('disabled') );

Answer 9

this works for me
$("#values:input").attr("disabled",true);
$("#values:input").attr("disabled",false);

Answer 10

Update for 2018:
Now there's no need for jQuery and it's been a while since document.querySelector or document.querySelectorAll (for multiple elements) do almost exactly same job as $, plus more explicit ones getElementById, getElementsByClassName, getElementsByTagName
Disabling one field of "input-checkbox" class
document.querySelector('.input-checkbox').disabled = true;
or multiple elements
document.querySelectorAll('.input-checkbox').forEach(el => el.disabled = true);

Answer 11

You can use the jQuery prop() method to disable or enable form element or control dynamically using jQuery. The prop() method require jQuery 1.6 and above.
Example:
<script type="text/javascript">
$(document).ready(function(){
$('form input[type="submit"]').prop("disabled", true);
$(".agree").click(function(){
if($(this).prop("checked") == true){
$('form input[type="submit"]').prop("disabled", false);
}
else if($(this).prop("checked") == false){
$('form input[type="submit"]').prop("disabled", true);
}
});
});
</script>

Answer 12

An alternate way to disable the input field is by using jQuery and css like this:
jQuery("#inputFieldId").css({"pointer-events":"none"})
and to enable the same input the code is as follows:
jQuery("#inputFieldId").css({"pointer-events":""})

Answer 13

Disable:
$('input').attr('readonly', true); // Disable it.
$('input').addClass('text-muted'); // Gray it out with bootstrap.
Enable:
$('input').attr('readonly', false); // Enable it.
$('input').removeClass('text-muted'); // Back to normal color with bootstrap.

Answer 14

Disable true for input type :
In case of a specific input type (Ex. Text type input)
$("input[type=text]").attr('disabled', true);
For all type of input type
$("input").attr('disabled', true);

Answer 15

<html>
<body>
Name: <input type="text" id="myText">
<button onclick="disable()">Disable Text field</button>
<button onclick="enable()">Enable Text field</button>
<script>
function disable() {
document.getElementById("myText").disabled = true;
}
function enable() {
document.getElementById("myText").disabled = false;
}
</script>
</body>
</html>

Answer 16

I used #gnarf answer and added it as function
$.fn.disabled = function (isDisabled) {
if (isDisabled) {
this.attr('disabled', 'disabled');
} else {
this.removeAttr('disabled');
}
};
Then use like this
$('#myElement').disable(true);

Answer 17

2018, without JQuery (ES6)
Disable all input:
[...document.querySelectorAll('input')].map(e => e.disabled = true);
Disable input with id="my-input"
document.getElementById('my-input').disabled = true;
The question is with JQuery, it's just FYI.

Answer 18

Approach 4 (this is extension of wild coder answer)
txtName.disabled=1 // 0 for enable
<input id="txtName">

Answer 19

In jQuery Mobile:
For disable
$('#someselectElement').selectmenu().selectmenu('disable').selectmenu('refresh', true);
$('#someTextElement').textinput().textinput('disable');
For enable
$('#someselectElement').selectmenu().selectmenu('enable').selectmenu('refresh', true);
$('#someTextElement').textinput('enable');