Use the checkSubmittedForm function to validate the form when the user clicks "submit".

CODE:

Age:

Javascript:

function checkAgeForm(event) { var form = document.getElementById("submitAge"); var userAge = form.userAge;

userAge.style.backgroundColor = "LightGreen"; if (userAge.value < 0) { userAge.style.backgroundColor = "Orange"; event.preventDefault(); } }

/* Your solution goes here */