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What is the role of ctrlKey Mouse Event in JavaScript?

The ctrlkey mouse event property is used to show whether the CTRL key is pressed or not when the mouse button is clicked.

Example

You can try to run the following code to learn how to implement ctrlKey Mouse event in JavaScript.

<!DOCTYPE html>
<html>
   <body onmousedown="funcCtrlKey(event)">
      <div>Press and hold CTRL key and then click here.</div>
      <script>
         function funcCtrlKey(event) {
            if (event.ctrlKey) {
               alert("CTRL key: Pressed");
            } else {
               alert("CTRL key: NOT Pressed");
            }

         }
      </script>
   </body>
</html>
Updated on 23-May-2020 09:32:42

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