Question

I have a button and a textfield in a form and when its clicked the form posts to another page. Is it possible to have some JavaScript function that checks if the textfield contains a value when the button is clicked? What I want is to display a message (alert box) if the button is clicked but the field is empty. The button should only submit if the field is filled. Possible?

Thanks!

Answer 1

Of course this is possible. It’s even the very basics of web development.
Look at this link to learn how to validate data before submitting:
http://www.w3schools.com/js/js_form_validation.asp