Check ASP.NET Page If Valid Using JavaScript

Check ASP.NET Page If Valid (All Validating Form Input Controls Are Valid) Using JavaScript

function ValidatePage() {
if (typeof(Page_ClientValidate) == 'function') {
Page_ClientValidate();
}
if (Page_IsValid) {
//Add Your JavaScript If Page Valid.
document.getElementById('divCaution').style.display = 'none';
}
else {
//Add Your JavaScript If Page Not Valid.
document.getElementById('divCaution').style.display = 'block';
}
}