Validating a textbox in javascript

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The following code shows the implementation of this validate() function.Now we will see how we can validate our entered form data before submitting it to the web server.It makes analyzing, reporting and then acting on your data easier when it all conforms to certain formatting.

NET, data validation was performed through scripts using either Java Script or VBScript.

If the data entered by a client was incorrect 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 which used to put a lot of burden on the server.

A good place for this is the additional instructions section of your question title.

is called when the element had the focus, and the user changed to another control (which is usually an indication that they have finished with the current input field).

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