Syntax
document.form.button.click()
The click() method simulates the click event.
<html> <script language="JavaScript"> <!-- function clickFirstButton() { document.myForm.button1.click(); } --> </script> <form name="myForm"> <input type="button" value="Display alert box" name="button1" onClick="alert('You clicked the first button.')"><br> <input type="button" value="Call on button 1" name="button2" onClick="clickFirstButton()"> </form> </html>