Trigger validator control validation from javascript

function checkForConfirmRate()
{
for(var i=0;i<Page_Validators.length;i++)
{
if(Page_Validators[i].id != '<%= rfvStockCode.ClientID %>')
{
continue;
}
ValidatorValidate(Page_Validators[i]); //Function to trigger the validation
ValidatorUpdateIsValid();//To show the validation message according to the validator display property
ValidationSummaryOnSubmit();//To show in sumary(if exists)
return Page_IsValid;
}
}