jQuery changing css class to div

Question

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.

thanks a lot

Answer 1

$(".first").addClass("second");

If you'd like to add it on an event, you can do so easily as well. An example with the click event:

$(".first").click(function() {
    $(this).addClass("second");
});

Answer 2

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>

Answer 3

Yep, easily.

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

Answer 4

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!

Answer 5

Hi,

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