validation in javascript

[soni]

i am new in programming
i am having 10 asp forms i want to do validation i create separate file commonfunctions.js where i will keep all common functions in my project
now pl tell me how to write validation code
which will check all textboxes should not be blank how to refer all
forms in function
pl pl. help me

[CornedBee]

First, do the validation server-side. When you're satisfied with that, then you can do some validation client-side.

For that, learn JavaScript. Really learn it, not look at two small scripts and then come to a forum asking people to do it for you.

[The Hobo]

Validation in JavaScript should only complement validation on the server-side. Otherwise, if the user has JavaScript turned off, you're screwed.

Unless of course, you're submitting the form via JavaScript and only via JavaScript -- then the user can't do anything.

[CornedBee]

Sure. He can manually submit garbage to your server and corrupt your database.

[penagate]

There is no reliable way of ensuring where a HTTP request comes from - you must deal with whatever you get.