To trigger a JavaScript click event, let us see the example of mouse hover.
Example
Live Demo
<!DOCTYPE html> <html> <body> <p>Hover over the button.</p> <form> <input type="button" id="test" value="Hover" onmouseover="display()" onclick="alert('click event')"> </form> <script> function display() { document.getElementById("test").click(); } </script> </body> </html>