Display in console if Select list value contains a value from an array in JavaScript?

Javascript Web Development Object Oriented Programming

Let’s say the following is our dropdown −

<select>
   <option>John</option>
   <option>David</option>
   <option>Chris</option>
   <option>Mike</option>
   <option>Bob</option>
   <option>Carol</option>
</select>

Following is our array −

var listOfNames = ["Chris", "Robert", "Mike"];

To check whether the selected list value contains a value in array, use −

$(‘select’).on(‘change’).

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>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/fontawesome/4.7.0/css/font-awesome.min.css">
</head>
<body>
<select>
<option>John</option>
<option>David</option>
<option>Chris</option>
<option>Mike</option>
<option>Bob</option>
<option>Carol</option>
</select>
<script>
   var listOfNames = ["Chris", "Robert", "Mike"];
   $('select').on('change', function() {
      var name = this.value.split(' ')[0];
      if($.inArray(name, listOfNames) > -1) {
         console.log('This is present in list of name array');
      } else {
         console.log('This is not present in list of name array');
      }
   });
</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.