How to remove li elements on button click in JavaScript?

Javascript Web Development Object Oriented Programming

Let’s say the following is our Unordered List (ul) −

<ul>
   <li class="subjectName">JavaScript <button>Remove</button></li>
   <br>
   <li class="subjectName">MySQL <button>Remove</button></li>
   <br>
   <li class="subjectName">MongoDB <button>Remove</button></li>
   <br>
   <li class="subjectName">Java <button>Remove</button></li>
</ul>

Above, you can see the “Remove” button with every li element. On clicking this button, you can remove any li element.

Following is the code to remove li elements on button click;

Example

Live Demo

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initialscale=1.0">
<title>Document</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.
css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u"
crossorigin="anonymous">
</head>
<body>
<h1>Remove the subjects</h1>
<h2>The Subjects are as follows:</h2>
<ul>
<li class="subjectName">JavaScript <button>Remove</button></li>
<br>
<li class="subjectName">MySQL <button>Remove</button></li>
<br>
<li class="subjectName">MongoDB <button>Remove</button></li>
<br>
<li class="subjectName">Java <button>Remove</button></li>
</ul>
<script>
   var allSubjectName = document.querySelectorAll(".subjectName");
   for (var index = 0; index <allSubjectName.length; index++){
      allSubjectName[index].addEventListener("click", function(){
         this.classList.toggle("active");
      });
      allSubjectName[index].querySelector("button").addEventListener("click",
      function(){
         this.closest(".subjectName").remove();
      });
   }
</script>
</body>
</html>

To run the above program, save the file name “anyName.html(index.html)” and right click on the file. Select the option “Open with Live Server” in VS Code editor.