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                      An attacker can use JavaScript hijacking to pretend to be a legitimate user and read sensitive data
                      from a Web application that is vulnerable, especially one that uses Ajax (Asynchronous JavaScript and
                      XML). Nearly all significant Ajax apps have been discovered to be insecure.



                3.8 LOOPS IN JAVASCRIPT

              In a loop,  a  block of code  or  a  set of instructions is repeated  a
              predetermined number  of times  in a computer  program  without
              having  to be written again until a predetermined condition  is
              fulfilled. In other words, loops allow you to repeatedly run one or
              more statements in your code.

              for loop

              The for loop is an iterative statement used to check for specific conditions and then repeatedly run a block of
              code as long as those conditions are satisfied.
              Syntax:

                  for(initialization; condition; increment)
                  {//statements – body of loop }
              Flow diagram:

                                               Initialization/Starting
                                                    statement

                                                           Next iteration of the loop



                                                       Test       True      Execute
                                                    Statement            Statement(s)



                                                          False


                                                  Exit from loop

              Output of the preceding program is as follows:





















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