Ali
Ali

Reputation: 267177

How can I remove all CSS classes using jQuery/JavaScript?

Instead of individually calling $("#item").removeClass() for every single class an element might have, is there a single function which can be called which removes all CSS classes from the given element?

Both jQuery and raw JavaScript will work.

Upvotes: 875

Views: 684936

Answers (13)

xgqfrms
xgqfrms

Reputation: 12186

I like using native JavaScript to do this, believe it or not!

solution 1: className

  1. Remove all class of all items
const items = document.querySelectorAll('item');
for (let i = 0; i < items.length; i++) {
  items[i].className = '';
}
  1. Only remove all class of the first item
const item1 = document.querySelector('item');
item1.className = '';

solution 2: classList

// remove all class of all items
 const items = [...document.querySelectorAll('.item')];
 for (const item of items) {
   item.classList.value = '';
 }
 // remove all class of the first item
 const items = [...document.querySelectorAll('.item')];
 for (const [i, item] of items.entries()) {
   if(i === 0) {
     item.classList.value = '';
   }
 }
 // or
 const item = document.querySelector('.item');
 item.classList.value = '';

jQuery ways (not recommended)

  1. $("#item").removeClass();

  2. $("#item").removeClass("class1 ... classn");

refs

https://developer.mozilla.org/en-US/docs/Web/API/Element/className

https://developer.mozilla.org/en-US/docs/Web/API/Element/classList

Upvotes: 6

user7396942
user7396942

Reputation:

Try with removeClass.

For instance:

var nameClass=document.getElementsByClassName("clase1");
console.log("after", nameClass[0]);
$(".clase1").removeClass();
var nameClass=document.getElementsByClassName("clase1");
console.log("before", nameClass[0]);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="clase1">I am a Div with class="clase1"</div>

Upvotes: 2

Vincent
Vincent

Reputation: 2159

Since not all versions of jQuery are created equal, you may run into the same issue I did, which means calling $("#item").removeClass(); does not actually remove the class (probably a bug).

A more reliable method is to simply use raw JavaScript and remove the class attribute altogether.

document.getElementById("item").removeAttribute("class");

Upvotes: 7

You can just try:

$(document).ready(function() {
   $('body').find('#item').removeClass();
});

If you have to access that element without a class name, for example you have to add a new class name, you can do this:

$(document).ready(function() {
   $('body').find('#item').removeClass().addClass('class-name');
});

I use that function in my project to remove and add classes in an HTML builder.

Upvotes: 8

Shawn Rebelo
Shawn Rebelo

Reputation: 1087

Remove specific classes:

$('.class').removeClass('class');

Say if element has class="class another-class".

Upvotes: 13

Nezir
Nezir

Reputation: 6925

I had a similar issue. In my case, on disabled elements was applied that aspNetDisabled class and all disabled controls had wrong colors. So, I used jQuery to remove this class on every element/control I want and everything works and looks great now.

This is my code for removing aspNetDisabled class:

$(document).ready(function () {

    $("span").removeClass("aspNetDisabled");
    $("select").removeClass("aspNetDisabled");
    $("input").removeClass("aspNetDisabled");

});

Upvotes: -2

uihelp
uihelp

Reputation: 198

$('#elm').removeAttr('class');

Attribute "class" will no longer be present in "elm".

Upvotes: 6

Isaac Waller
Isaac Waller

Reputation: 32740

Just set the className attribute of the real DOM element to '' (nothing).

$('#item')[0].className = ''; // the real DOM element is at [0]

Other people have said that just calling removeClass works - I tested this with the Google jQuery Playground: http://savedbythegoog.appspot.com/?id=ag5zYXZlZGJ5dGhlZ29vZ3ISCxIJU2F2ZWRDb2RlGIS61gEM ... and it works. So you can also do it this way:

$("#item").removeClass();

Upvotes: 20

jimyi
jimyi

Reputation: 31201

$("#item").removeClass();

Calling removeClass with no parameters will remove all of the item's classes.


You can also use (but it is not necessarily recommended. The correct way is the one above):

$("#item").removeAttr('class');
$("#item").attr('class', '');
$('#item')[0].className = '';

If you didn't have jQuery, then this would be pretty much your only option:

document.getElementById('item').className = '';

Upvotes: 1701

Gregory Bologna
Gregory Bologna

Reputation: 285

Let's use this example. Maybe you want the user of your website to know a field is valid or it needs attention by changing the background color of the field. If the user hits reset then your code should only reset the fields that have data and not bother to loop through every other field on your page.

This jQuery filter will remove the class "highlightCriteria" only for the input or select fields that have this class.

$form.find('input,select').filter(function () {
    if((!!this.value) && (!!this.name)) {
        $("#"+this.id).removeClass("highlightCriteria");
    }
});

Upvotes: 2

Yanni
Yanni

Reputation: 2583

The shortest method

$('#item').removeAttr('class').attr('class', '');

Upvotes: 9

da5id
da5id

Reputation: 9136

Hang on, doesn't removeClass() default to removing all classes if nothing specific is specified? So

$("#item").removeClass();

will do it on its own...

Upvotes: 131

kangax
kangax

Reputation: 39188

Of course.

$('#item')[0].className = '';
// or
document.getElementById('item').className = '';

Upvotes: 15

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