How to find out what character key is pressed in JavaScript?



To find out which characters key is pressed, use the window.event along with keyCode. Following is the code −

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>
</head>
<body>
<form>
<input type="text" onkeypress="return keyPressName(event)" />
</form>
<script>
   function keyPressName(myEventKeyName){
      var pressedKey;
      if(window.event){
         pressedKey = myEventKeyName.keyCode;
      } else if(myEventKeyName.which)
      {
         pressedKey = myEventKeyName.which;
   }
   alert(String.fromCharCode(pressedKey));
}
</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 −

Here, I am pressing the character g. This will produce the following output −

After displaying character g when you click on OK button then you will get the following output.


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