[jquery] jQuery changing css class to div

If I have one div element for example and class 'first' is defined with many css properties. Can I assign css class 'second' which also has many properties differently defined to this same div just on some event without writing each property in line.

This question is related to jquery css html

The answer is


$(document).ready(function () {

            $("#divId").toggleClass('cssclassname'); // toggle class
});

**OR**

$(document).ready(function() {
        $("#objectId").click(function() {  // click or other event to change the div class
                $("#divId").toggleClass("cssclassname");     // toggle class
        )}; 
)};

An HTML element like div can have more than one classes. Let say div is assigned two styles using addClass method. If style1 has 3 properties like font-size, weight and color, and style2 has 4 properties like font-size, weight, color and background-color, the resultant effective properties set (style), i think, will have 4 properties i.e. union of all style sets. Common properties, in our case, color,font-size, weight, will have one occuerance with latest values. If div is assigned style1 first and style2 second, the common prpoerties will be overwritten by style2 values.

Further, I have written a post at Using JQuery to Apply,Remove and Manage Styles, I hope it will help you

Regards Awais


This may not be exactly on target because I am not completely clear on what you want to do. However, assuming you mean you want to assign a different class to a div in response to an event, the answer is yes, you can certainly do this with jQuery. I am only a jQuery beginner, but I have used the following in my code:

$(document).ready(function() {
    $("#someElementID").click(function() {  // this is your event
        $("#divID").addClass("second");     // here your adding the new class
    )}; 
)};

If you wanted to replace the first class with the second class, I believe you would use removeClass first and then addClass as I did above. toggleClass may also be worth a look. The jQuery documentation is well written for these type of changes, with examples.

Someone else my have a better option, but I hope that helps!


You can add and remove classes with jQuery like so:

$(".first").addClass("second")
// remove a class
$(".first").removeClass("second")

By the way you can set multiple classes in your markup right away separated with a whitespace

<div class="second first"></div>

Yep, easily.

$("#mydiv").attr("class", "second");

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