JavaScript get the length of select options(dropdown)?


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 −

Updated on: 01-Sep-2020

778 Views

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