Javascript form validation on client side without server side - is it safe?

Posted by Vitali Ponomar on Stack Overflow See other posts from Stack Overflow or by Vitali Ponomar
Published on 2011-11-13T17:45:40Z Indexed on 2011/11/13 17:50 UTC
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JavaScript

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validation

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form-validation

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protection

Supose I have some form with javascript client side validation and no server side validation.

If user disable javascript in his browser there will no be submit button so he can not send me any data without js enabled.

But I do not know is there any way to change my validation instructions from client browser so he could send me untrusted data and make some damage to my database.

Thanks in advance and sorry for my (possibly) obvious question!!!

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