return false not working in jquery require field validation -

i have dropdownlist (.color) validate jquery.default value of dropdown vÆlg.and want validate in anchor tag click (.viewmore).my code this

     $(".viewmore").on('click',function(event){       requiredvalidation($(this).parents('.box01').find(".color"));        });            function requiredvalidation(ddl) {      ddl = $(ddl);      var isvalid = true;     if (jquery.trim(ddl.val()) == 'vÆlg' ) {         isvalid = false;         ddl.addclass("error");      }     else {         ddl.removeclass("error");     }    alert(isvalid)     return isvalid; } 

at last alert message getting value false correctly.but still page redirect given url of anchor tag.can 1 tell me whats going wrong?

try this

return requiredvalidation($(this).parents('.box01').find(".color"));