jQuery addClass() with function

Introduction

Add classes to p elements

View in separate window 

<!DOCTYPE html>
<html>
<head>
<script 
 src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>//from  w  ww.j av  a 2s.  co  m
<script>
$(document).ready(function(){
  $("button").click(function(){
    $("p").addClass(function(n){
      return "par_" + n;
    });
  });
});
</script>
<style>
.par_0 {
  color: blue;
}
.par_1 {
  color: red;
}
</style>
</head>
<body>

<h1>This is a heading</h1>

<p>This is a paragraph.</p>
<p>This is another paragraph.</p>

<button>Test</button>

</body>
</html>



PreviousNext

Related