Friday, February 8, 2013

Ajax Fundamentals part 2

Web Form Processing

  • Major change in Ajax is in page processing and we have two options:
    • traditional full - page processing
    • AJAX partial - page processing
  • Initially full page comes from the server and then can use either full partial - page processing

Friday, February 1, 2013

CAPTCHA

CAPTCHA

CAPTCHA or Captcha (pronounced as cap-ch-uh) which stands for “Completely Automated Public Turing test to tell Computers and Humans Apart” is a type of challenge-response test to ensure that the response is only generated by humans and not by a computer. In simple words, CAPTCHA is the word verification test that you will come across the end of a sign-up form while signing up for Gmail or Yahoo account. The following image shows the typical samples of CAPTCHA.
What is CAPTCHA and How it Works?

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