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Why is client-side validation not enough?

Asked 2010-08-14T13:31:40.307
42

I saw here that:

As you probably already know, relying on client-side validation alone is a very bad idea. Always perform appropriate server-side validation as well.

Could you explain why server-side validation is a must?

validation server-side client-side-validation
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Client side validations presuppose a safe browser, a client side language, or HTML 5. All these elements could be disabled, partially unusable, or simply not implemented. Your website have to be used from every person, with every browser. The server side languages are safer, and -if they aren't bugs- the validation will be surely safer and right.

answered 2010-08-14T23:51:03.880

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