Add to a css class using JQuery

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Is it possible to add/update a css class using JQuery.

I know I can add css to a DOM element using this add css rule using jquery, but I would like to add/remove from the css class itself.

You cannot directly update the CSS classes in a separate css file with jQuery. You could however create a <style> tag and add/overwrite a CSS class:

$('<style>.newClass { color: red; }</style>').appendTo('body');

When updating a CSS class, you'll need to take care the cascading order. Otherwise, it may not turn out to be the effect you are after.

jQuery Get and Set CSS Classes, You cannot directly update the CSS classes in a separate css file with jQuery. You could however create a <style> tag and add/overwrite a CSS� jQuery Get jQuery Set jQuery Add jQuery Remove jQuery CSS Classes jQuery css() Use the css() method to add a pink background color to a <p> element. $("p").

If I understand what you are trying to do I believe this should work for you.

$("#UniqueName").remove();

$("<style id="UniqueName" type='text/css'> .MyClass{ color:#f00 !important; font-weight:bold !important;} </style>").appendTo("head");

It'd be best to have logical small classes, and use jQuery's .toggleClass() method.

.Bold{ font-weight:bold; }
.Italic {font-style:italic;}

function SwitchFont(){
$(".MyObjects").toggleClass("Bold");
$(".MyObjects").toggleClass("Italic");
}

jQuery addClass() Method, Description: Adds the specified class(es) to each element in the set of matched elements. version added: 1.0.addClass( className ). className. Type: String. You cannot directly update the CSS classes in a separate css file with jQuery. You could however create a <style> tag and add/overwrite a CSS class: $('<style>.newClass { color: red; }</style>').appendTo('body'); When updating a CSS class, you'll need to take care the cascading order. Otherwise, it may not turn out to be the effect you are after.

It's too easy using the lastest versions of Jquery, using something like this:

$('jQuery selector').css({"css property name":"css property value"});

For example:

$('#MyDiv').css({"background-color":"red"});

Add to a css class using JQuery, version added: 1.9.css( propertyNames ) The .css() method is a convenient way to get a computed style property from the first matched element, especially in light It's strongly advised to use classes instead; otherwise use a jQuery plugin. The addClass() method adds one or more class names to the selected elements. This method does not remove existing class attributes, it only adds one or more class names to the class attribute. Tip: To add more than one class, separate the class names with spaces.

  1. I have best example of how to apply CSS class in multiple tags.
  2. First create simple html page and inside write down your css.
  3. Next you create simple Query and and apply custom css.
  4. Now if you want apply which tag or attributes css using JQuery.
  5. When I write down this code to easily understand

    Code:

    <!DOCTYPE html>
      <html>
        <head>
          <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
        <script>
          $(document).ready(function(){
            $("#btn1").click(function(){
              $("h1,p").toggleClass("blue");
              $("div").toggleClass("important");
            });
          });
          </script>
    <style>
     .important {
        font-weight: bold;
        font-size: 40px;
        color: chartreuse;
     }
    .blue{
        color: #000080;
     }
    </style>
    </head>             
    <body>
      <h1>This is example</h1>
      <p>This is example</p>
      <div>Some important message </div>
      <button id="btn1">Add class </button>
    </body>
    </html>
    

.addClass(), In this tutorial you will learn how to add or remove the CSS classes from the HTML elements dynamically using jQuery with just a single line of code. When a number is passed as the value, jQuery will convert it to a string and add px to the end of that string. If the property requires units other than px, convert the value to a string and add the appropriate units before calling the method. When using .css() as a setter, jQuery modifies the element's style property.

You can do this by using the addClass and removeClass functions in jquery. Add the class like this:

$("#button1").click(function(){
   $(#the_div).addClass('myClass');
});

Then you can remove it like this:

$("#button2").click(function(){
   $("#the_div").removeClass('myClass');
});

Your CSS properties should be defined in ".myClass".

.css(), toggleClass(): Toggles between adding or removing classes from selected elements; css(): Sets or returns style attribute. jQuery addClass() Method: The addClass� It simply adds the class, appending it to any which may already be assigned to the elements. Before jQuery version 1.12/2.2, the.addClass () method manipulated the className property of the selected elements, not the class attribute. Once the property was changed, it was the browser that updated the attribute accordingly.

jQuery Add and Remove CSS Classes, jQuery comes with addClass() and removeClass() to add or remove CSS class dynamically. For example,. $('#para1').addClass('highlight')� As I can't directly add the rules in the CSS, I will stick with the css method of jQuery. Some other related questions provide solutions as well: Create a CSS rule / class with jQuery at runtime; Changing CSS Rules using JavaScript or jQuery; I can't really use jQuery plugins, but if I could, I would certainly use jQuery.Rule

jQuery, This is also a nifty jQuery CSS trick to remove and add a class in the same call. // change text color from red to green (classes specified in� **This can be achived easily using two different ways:** 1)We can also do this by using addClass and removeClass of Jquery 2)Toggle class of jQuery **1)First Way** $(documnet.ready(function(){ $('#dvId').click(function(){ $('#dvId').removeClass('active class or your class name which you want to remove').addClass('active class or your class name which you want to add'); }); }); **2) Second Way

How to add / remove CSS class dynamically in jQuery, It's not recommended to use .css() as a setter in production-ready code, but when passing in an object to set CSS, CSS properties will be camelCased instead of using a hyphen. link Using CSS Classes for Styling. As a getter, the .css() method is valuable. However, it should generally be avoided as a setter in production-ready code, because it's

Comments
  • Did you look at the documentation first? api.jquery.com/css and api.jquery.com/class-selector
  • The link you provided is to add css style(s), if you want to add a class to what you already have use $("#tagid").addClass('classname');. Otherwise you use something like $("#tagid").css("color","red"); see .css
  • @Jeremy. Thanks for the links.
  • can you tell me why do you want to add the class to the style itself?? that will appened to the body
  • accepted for the first sentence, which is what I was asking. (apologies to others for not asking in a better way)
  • @gotsp , one quick question , why do want to do this way and make it complicated , why don't you just add to the element you want.
  • @kobe, it was how I was thinking about trying to do something... thinking (incorrectly) that I needed to update a 'class' instead of updating the style of a DOM element.
  • Your answer as posted yields invalid HTML. Style tags belong in the head section. See stackoverflow.com/questions/2830296/…
  • Please include some more text to support your answer
  • did you read the OP's question? the OP wants to add to a class, not add a class
  • @Neal , but there are better ways to do it , i think we should explain OP that he can still use addclass and .css to achieve the same.
  • @kobe, great, explain whatever relevant point you wish, but do it in comments, or do it after you correctly answer the actual question as it was asked.