Java Script provides a way to validate form's data on the client's computer before sending it to the web server. First let us see how to do a basic form validation.In the above form, we are calling validate() to validate data when onsubmit event is occurring.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.This validation descriptor is valid only for drop down lists.The drop down select list boxes usually will have one item saying ‘Select One’ (and that item will be selected by default).Using client side Java Script is an efficient way to validate the user input in web forms.
It makes your page much more user-friendly, and takes out the frustration of having to fill out the same form repeatedly.
Now, the values are displayed from the dynamically created Textboxes.
Here I have created the text boxes using C# in the code behind.
It's also very precise, as you can point out the exact field where there's a problem.
We're going to be checking the form using a function, which will be activated by the form's Validating this form would be considerably simpler than one containing radio buttons or select boxes, but any form element can be accessed.