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JavaScript jQuery Basics (2014) Creating a Password Confirmation Form Perfect

Tingting Gu
Tingting Gu
10,760 Points
Posted by Tingting Gu
Tingting Gu
10,760 Points

Whether .keyup(enableSubmitEvent) is necessary

In the video, the .keyup(enableSubmitEvent is added at the end as follows:

$password.focus(passwordEvent).keyup(passwordEvent).keyup(confirmPasswordEvent).keyup(enableSubmitEvent);  
$confirmPassword.focus(confirmPasswordEvent).keyup(confirmPasswordEvent).keyup(enableSubmitEvent);

My question is that as we have already run "enableSubmitEvent();" at the end, why shall we still need to add ".keyup(enableSubmitEvent)"?

I think the enableSubmitEvent() will effect whether the key is gone up or not.

1 Answer

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Tingting,

The enableSubmitEvent() function is called once on page load. This is to essentially disable the submit button since all the inputs are blank when the page first loads.

That function is responsible for either enabling or disabling the submit button. So if you never call it again then you won't be able to enable the submit button.

The idea behind .keyup(enableSubmitEvent) is that as the user is typing you can repeatedly call that function to see whether the submit button should be enabled or not.

You don't know what keyup is finally going to be the one where all the validation passes so you call the enableSubmitEvent every time a key goes up.

Boris Baskovec
Boris Baskovec
4,798 Points
Boris Baskovec
Boris Baskovec
4,798 Points

I think you could also add the disabled property directly in the HTML, so it's disabled by default

Marcus Parsons
Marcus Parsons
15,719 Points

Marked as best answer