jQuery samples

each.js

// This code gets all textboxes with the 'required' class and 
// executes a method for those that don't have a value.

$(":text .required" ).each(function( index, element ) {
    var self = this;
    var labelText = $('label[for=' + self.id + ']').text();
    
    if (element.val() == "") {
       message("Please fill " + labelText, "#" + self.id);
       return false;
   }
});