Breaking Client side validations

[letom]

Some Programmers says, Experienced hackers can break client side validations and client side scripting .. is it true ?

[Beverleyh]

If by client side validation/scripting you mean JavaScript, then yes, anyone (not just experienced hackers) can 'break' the scripting because its easily turned off/disabled in the browser. This means, for example, Javascript form validation can't perform any checks so the form will just submit regardless of what is in the input fields. Better to run checks and (critical) validation server-side with php, etc.

[letom]

@Beverleyh

Thanks .. That what i am expected. I common sense this JavaScript is useless for validations, only a small trick to reduce the utilization of server.