04-02-2013, 10:52 AM
To design application form and validate it using Java Script
1To design application.pdf (Size: 103.05 KB / Downloads: 24)
Theory :
Form validation used to occur at the server, after the client had entered all necessary data and then pressed the Submit button. If some of the data that had been entered by the client had been in the wrong form or was simply missing, the server would have to send all the data back to the client and request that the form be resubmitted with correct information. This was really a lengthy process and over burdening server.
JavaScript, provides a way to validate form's data on the client's computer before sending it to the web server. Form validation generally performs two functions.