jquery check if div has class code example

Example 1: jquery hasclass

if ($( "#foo" ).hasClass('className')) {
	$( "#foo" ).removeClass( 'className');
} else {
  $( "#foo" ).addClass( 'className');
}

Example 2: detect if an element has a class jQurey

$("#EL_ID").hasClass("CLASS_NAME");

Example 3: jquery check if a class exists

if ($(".mydivclass")[0]){
    // Do something if class exists
} else {
    // Do something if class does not exist
}

Example 4: jquery hasclass

$( "#mydiv" ).hasClass( "foo" )

Example 5: jquery check if element has class starting with

/* Answer to: "jquery check if element has class starting with" */

if(!$(this).is('[class*="answerbox"]')) {
    //Finds element with no answerbox class
} else {
    //The element has already an answerbox class
}

Example 6: how to add class on the base of has class in jquery

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>addClass demo</title>
  <style>
  p {
    margin: 8px;
    font-size: 16px;
  }
  .selected {
    color: blue;
  }
  .highlight {
    background: yellow;
  }
  </style>
  <script src="https://code.jquery.com/jquery-3.5.0.js"></script>
</head>
<body>
 
<p>Hello</p>
<p>and</p>
<p>Goodbye</p>
 
<script>
$( "p" ).last().addClass( "selected" );
</script>
 
</body>
</html>

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