There is a function provided by ASP.NET 2.0 which checks for all the controls whether they meet the asp.net validation criteria or not. Or in other words, it checks whether all the validations done using ASP.NET Validation Controls are satisfied or not.
Function name : Page_ClientValidate()
It returns true or false.
Example
function validate() //javascript function
{
var isPageValid = Page_ClientValidate();
if(isPageValid)
{
}
}