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Captcha Implementation with Javascript

P: 13
Hi, I am a developer. I have been searching for best suited web development forums which provide helpful information on web development, so that I can get help from their active members for learning the Captcha Implementation with Javascript which is used to protect the website from the attack and accessing the website by machines. I have searched alot of forums but didn't get the answer. I hope any tech developer can help me in resolving the issue or provide me links of such more forums.
Sep 23 '16 #1
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Dormilich
Expert Mod 5K+
P: 8,639
so what is your question?
Sep 23 '16 #2

gits
Expert Mod 5K+
P: 5,270
missing a question as well - but for the sake of having some information here at least - lets first remember why a captcha is considered in the first place: Prevent machines/bots from submitting forms on a website. If the site does the captcha and its validation only clientside with javascript it renders its entire purpose useless - since it would be very easy to break. Simply load the site - overwrite the validation logic in the javascript locally and submit as much forms as you want to. A real! protection is only working with a serverside validation - so a pure Javascript Captcha is completely useless - and not even worth to be implemented (except for practicing some javascript coding) - since it cannot serve the purpose a captcha is meant for.
Sep 27 '16 #3

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