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• Try Catch Throw
Enter a password
(8 - 12 characters, at least 1 number, no spaces)

SAMPLE CODE <form onSubmit="return checkPassword();"> Enter a password<br> (8 - 12 characters, at least 1 number, no spaces) <br> <input type="text" id="f1"> <input type="submit" value="Submit Form"> </form> function checkPassword() { try{ var varPass = document.getElementById("f1").value; if (varPass.length < 8) { throw "Please enter at least 8 characters."; } if (varPass.indexOf(" ") !== -1) { throw "No spaces in the password, please."; } } // end try catch(err) { alert(err); } // end catch }