How to remove “disabled” attribute using jQuery?

问题

I have to disable inputs at first and then on click of a link to enable them.

This is what I have tried so far, but it doesn\'t work.

HTML:

<input type=\"text\" disabled=\"disabled\" class=\"inputDisabled\" value=\"\">

jQuery:

$(\"#edit\").click(function(event){
   event.preventDefault();
   $(\'.inputDisabled\').removeAttr(\"disabled\")
});

This shows me true and then false but nothing changes for the inputs:

$(\"#edit\").click(function(event){
   alert(\'\');
   event.preventDefault();
   alert($(\'.inputDisabled\').attr(\'disabled\'));
   $(\'.inputDisabled\').removeAttr(\"disabled\");
   alert($(\'.inputDisabled\').attr(\'disabled\'));
});

回答1:

Always use the prop() method to enable or disable elements when using jQuery (see below for why).

In your case, it would be:

$("#edit").click(function(event){
   event.preventDefault();
   $('.inputDisabled').prop("disabled", false); // Element(s) are now enabled.
});

jsFiddle example here.

---

Why use prop() when you could use attr()/removeAttr() to do this?

Basically, prop() should be used when getting or setting properties (such as autoplay, checked, disabled and required amongst others).

By using removeAttr(), you are completely removing the disabled attribute itself - while prop() is merely setting the property's underlying boolean value to false.

While what you want to do can be done using attr()/removeAttr(), it doesn't mean it should be done (and can cause strange/problematic behaviour, as in this case).

The following extracts (taken from the jQuery documentation for prop()) explain these points in greater detail:

"The difference between attributes and properties can be important in specific situations. Before jQuery 1.6, the .attr() method sometimes took property values into account when retrieving some attributes, which could cause inconsistent behavior. As of jQuery 1.6, the .prop() method provides a way to explicitly retrieve property values, while .attr() retrieves attributes."

"Properties generally affect the dynamic state of a DOM element without changing the serialized HTML attribute. Examples include the value property of input elements, the disabled property of inputs and buttons, or the checked property of a checkbox. The .prop() method should be used to set disabled and checked instead of the .attr() method. The .val() method should be used for getting and setting value."

回答2:

<input type="text" disabled="disabled" class="inputDisabled" value="">
​<button id="edit">Edit</button>​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

$("#edit").click(function(event){
    event.preventDefault();
    $('.inputDisabled').removeAttr("disabled")
});​

http://jsfiddle.net/ZwHfY/

回答3:

to remove disabled attribute use,

 $("#elementID").removeAttr('disabled');

and to add disabled attribute use,

$("#elementID").prop("disabled", true);

Enjoy :)

回答4:

Use like this,

HTML:

<input type="text" disabled="disabled" class="inputDisabled" value="">

<div id="edit">edit</div>

JS:

 $('#edit').click(function(){ // click to
            $('.inputDisabled').attr('disabled',false); // removing disabled in this class
 });

回答5:

I think you are trying to toggle the disabled state, in witch case you should use this (from this question):

$(".inputDisabled").prop('disabled', function (_, val) { return ! val; });

Here is a working fiddle.

回答6:

Thought this you can easily setup

$(function(){
$("input[name^=radio_share]").click
(
    function()
    {
        if($(this).attr("id")=="radio_share_dependent")
        {
            $(".share_dependent_block input, .share_dependent_block select").prop("disabled",false);   
        }
        else
        {
            $(".share_dependent_block input, .share_dependent_block select").prop("disabled",true);   
        }
    }
 );
});

回答7:

This was the only code that worked for me:

element.removeProp('disabled')

Note that it's removeProp and not removeAttr.

I'm using jQuery 2.1.3 here.

回答8:

2018, without JQuery

I know the question is about JQuery: this answer is just FYI.

document.getElementById('edit').addEventListener(event => {
    event.preventDefault();
    [...document.querySelectorAll('.inputDisabled')].map(e => e.disabled = false);
}); 

回答9:

This question specifically mentions jQuery, but if you are looking to accomplish this without jQuery, the equivalent in vanilla JavaScript is:

elem.removeAttribute('disabled');

来源：https://stackoverflow.com/questions/13626517/how-to-remove-disabled-attribute-using-jquery