how to remove CSS default class
This is my div
<div id="messageContainer">
This is my css class
#messageContainer{
height:26px;
color:#FFFFFF;
BACKGROUND-COLOR: #6af;
VERTICAL-ALIGN: middle;
TEXT-ALIGN: center;
PADDING-TOP:6px;
}
I want to remove default class and new css class
Please help;
You aren't dealing with a class. You have default rules applied to the ID element. As such, you should really only need to add the new class:
$("#messageContainer").addClass("newRules");
Any rules that aren't overwritten can be overwritten with the css() method:
$("#messageContainer").css({
'font-weight':'bold',
'color':'#990000'
}).addClass("newRules");
You can approach it two ways. One, use two classes and literally swap them out for each other:
.red { background: red }
.green { background: green }
And then in jQuery:
$("#messageContainer").attr('class','green'); // switch to green
$("#messageContainer").attr('class','red'); // switch to red
Or you can use CSS order to toggle a single class:
#messageContainer { background: red }
#messageContainer.green { background: green }
Then:
$("#messageContainer").toggleClass("green");
That would alternate backgrounds every time it was called.
You are not defining a css class in your example, you are using the selector for the id.
to use a class your code would be like:
<div id="messageContainer" class="messageContainer"></div>
and in your stylesheet or between style tags you would have
.messageContainer{
height:26px;
color:#FFFFFF;
BACKGROUND-COLOR: #6af;
VERTICAL-ALIGN: middle;
TEXT-ALIGN: center;
PADDING-TOP:6px;
}
then, using jquery you could remove this class by doing
$('#messageContainer').removeClass('messageContainer');
For IE10 and up use these methods:
// adds class "foo" to el
el.classList.add("foo");
// removes class "foo" from el
el.classList.remove("foo");
// toggles the class "foo"
el.classList.toggle("foo");
Try to add a period before your css class definition.
Using your example above you should use:
.messageContainer{
height:26px;
color:#FFFFFF;
BACKGROUND-COLOR: #6af;
VERTICAL-ALIGN: middle;
TEXT-ALIGN: center;
PADDING-TOP:6px;
}
