When doing validation in JavaScript, how do I keep validation methods that need to handle a bunch of contingencies from becoming unruly?
For example, I have a form with a field that has validation that checks:
- is the new value a number?
- Is the value in another field on the form > 0 when the current field > 0
- Is another field on the form == 1 and the current field == 0
- Is another field on the form == true and the current field is Mod another field == 0
Etc.
Currently, I've got a method with a bunch of if/else statements.
I could break each check out into it's own method and call it from the main validation method, but that would create a ton of new methods.
Update: regardless of whether I use a framework or individual methods, am I still resigned to having the calling validation method filled with If/Else or Switch statements with alert boxes for the failing validations?