programmatic date validation returning async?

[r3z0n8]

I have a form with a text field populated by datepicker() that I am trying to validate programmaticaly in the click event handler for a button:

`var formValid = true;

console.log( Date.now() + ' initial value: ' + formValid );

$('#expiryDate').validate(function(valid,elem){ if(!valid){ formValid = false; } console.log( Date.now() + ' in expiryDate validate: ' + formValid ); });

console.log( Date.now() + ' after expiryDate validate: ' + formValid );

$('#documentName').validate(function(valid,elem){ if(!valid){ formValid = false; } console.log( Date.now() + ' in documentName validate: ' + formValid ); });

console.log( Date.now() + ' after documentName validate: ' + formValid );

if(!formValid){ console.log( Date.now() + ' no post...' ); $('.btn').prop('disabled' ,false ); return; }

console.log( Date.now() + ' would post now...' );`

The validation for documentName returns correctly and synchronously. However, the validation for expiryDate does not: formValid is still true when it evaluates it to decide whether to return or to do the $.post().

If I add console.log() outputs, I am seeing that the validator for the expiryDate field is returning well after the code would have already executed the $.post().

What am I missing?

Here are the console.log() results (the numbers are a tick count for checking timing; true/false refers to the value of formValid):

1526495506879 initial value: true 1526495506881 after expiryDate validate: true 1526495506882 in documentName validate: true 1526495506883 after documentName validate: true 1526495506883 would post now... 1526495507084 in expiryDate validate: false 1526495507086 in expiryDate validate: false