即使验证返回false，表单仍会提交

Question

When I use the generic alert box the form validation works ok but if I try to make the alert box look nice using a JQuery script the form validates and submits despite the value returned being false

The standard alert box which works

function validate(){
    if( document.audit_form.audit_name.value == "" )
       {
         alert( "Please select a name for your audit" );
         document.audit_form.audit_type.focus() ;
         return false;
     }
return true;
}

Attempt one with jQuery MsgBox from codecanyon

function validate(){
    if( document.audit_form.audit_name.value == "" )
       {
         $.msgbox("Please select an audit type", 
                    {
                        type:"alert",
                        buttons: [
                            {type: "submit", value: "Ok"}
                        ]
                    },
                    function(result){

                    if (result && result=='Ok'){
                        return false;
                    }
            });
       }
return true();
}

Attempt two with Apprise

function validate(){
    if( document.audit_form.audit_name.value == "" )
       {
         apprise('Please enter a name for your audit?', {'textOk' : 'Ok',}, function(r) {

            if(r) { 
                return( true );
            } else { 
                return (false);
            }
        });
       }
}

In all three instances the alert box displays when it should but with the JQuery versions the form still submits. The functions are called using

 <form id="audit_form" name="audit_form" method="post" enctype="multipart/form-data" 
action="<?php echo $_SERVER['PHP_SELF']; ?>" onsubmit="return validate();">

Answer 1

Both $.msgbox and apprise are not blocking functions and the result is returned before functions' callback, you should change your logic. Basically that's how your form submit should look like:

$('#audit_form').submit(function(event){
     event.preventDefault();
     yourUIAlertFunction(..., ..., function(isSuccess){
          if(isSuccess){
              submitFormLogic();
          } else {
              hideAlertAndShowErrors();
          }
     });
});