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JavaScript Build an Interactive Website Form Validation and Manipulation Modifying Attributes

Sasha Lim
Sasha Lim
5,377 Points
Posted by Sasha Lim
Sasha Lim
5,377 Points

True and False in Form Validation

Why is it that for the hints that show when the email is valid or invalid, the false value is what triggers the valid hint, and the true values is what triggers the invalid hint? I understand the adding and removing of the classes, but not why false = valid and true = invalid, by just the code written in the anon function written there.

Similarly, the latter part of the video, showing requiredFilledIn being true resulting in the submit button disabled also has me stumped.

1 Answer

Tom Mertz
Tom Mertz
15,254 Points
Tom Mertz
Tom Mertz
15,254 Points

I think in later videos you are going to go back and replace true and false with expressions that make more sense. I'd say stick with it and it will probably make more sense in a bit.