[TYPO3-core] RFC #9553: Bug: Form validation script jsfunc.validateform.js sometimes fails in IE

[Vladimir Podkovanov]

By the way I think form validation should be rewritten in the future 
from scratch. IMHO it should be server side as

1. in case of an error in js validation func emails just sending without 
checking required fields

2. client side checking could be easily tricked by editing js or 
switching js off

3. there is old bug 3527 re: non-english unicode labels in form; that is 
not resolved because old browsers have missed javascript function 
decodeURI() (one of reasons)

4. bug in current thread also shows that better do server side 
evaluation than rely on valid javascript execution in every browser

Vladimir