<html><head><script src="https://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script><script>$(document).ready(function(){ $("form").submit(function(event){ event.preventDefault(); alert("Submit prevented"); });});</script></head><body><form action="">First name: <input type="text" name="FirstName" value="Mickey"><br>Last name: <input type="text" name="LastName" value="Mouse"><br><input type="submit" value="Submit"></form> </body></html>