Q:

Using jQuery add a new class to an element that already has a class

hamza
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2022-05-18
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Using jQuery add a new class to an element that already has a class.

JQUERY,
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hamza
2022-05-18
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HTML Code :

<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-git.js"></script>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>
<p class="w3r_bg_orange">The best way we learn anything is by practice and exercise questions.</p>
<button id="button1">Click to see the effect</button>
</body>
</html>

CSS Code:

button {
    display: block;
    margin: 20px 0 0 0;
    } 
 
p {
    background: white;
  }
  .w3r_bg_orange{
    background: orange;
  }
  .w3r_bg_red {
    color: red;
  }

JavaScript Code :
$('#button1').click(function(){ 
$( "p" ).addClass(function( index, currentClass ) {
  var addedClass;
   if ( currentClass === "w3r_bg_orange" ) {
    addedClass = "w3r_bg_red";
    }
 return addedClass;
});
});

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