JavaScript get the length of select options(dropdown)?

JavascriptWeb DevelopmentObject Oriented Programming

Let’s say the following is our dropdown (select) −

<select id="lengthListOfOptionDemo">
   <option>John</option>
   <option>Mike</option>
   <option>Sam</option>
   <option>David</option>
   <option>Carol</option>
</select>

Following is the code to get the length of list options in JavaScript −

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>
</head>
<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>
<link rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/fontawesome/
4.7.0/css/font-awesome.min.css">
<style>
</style>
<body>
<select id="lengthListOfOptionDemo">
<option>John</option>
<option>Mike</option>
<option>Sam</option>
<option>David</option>
<option>Carol</option>
</select>
<script>
   var lengthOfListOptions = $("#lengthListOfOptionDemo option").length;
   console.log("The length is=" + lengthOfListOptions);
</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.

Output

This will produce the following output −

raja
Published on 01-Sep-2020 14:05:00
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