WEBDEV Concepts

26 Part 1: Internet: basic concepts AJAX programming The diagram below presents the use of "programmed AJAX" in a WEBDEV site: Browser Action 1 Web server 2 Ask to run the procedure 3 Run the server procedure 5 Send the result only AUTOMATIC update of modified elements 7 6 4 Generate the result: XML document, character string Analyze the result Execution of a browser process ( AJAXExecute or AJAXExecuteAsynchronous ). Request to execute a server procedure. The server procedure is executed. The result is generated. The result of the procedure will be expressed as a character string or an XML document. The result of the procedure is sent ( RESULT ). The result of the procedure is analyzed. The modified information is displayed. Only the necessary controls are refreshed.