There are two main methods for validating forms: (usually done using Java Script).Server-side validation is more secure but often more tricky to code, whereas client-side (Java Script) validation is easier to do and quicker too (the browser doesn't have to connect to the server to validate the form, so the user finds out instantly if they've missed out that required field! In this tutorial we'll build a simple form with client-side Java Script validation.
Only when all conditions have been satisfied do we reach the command, in which case the form will be submitted.
Shows you how to write a script that ensures your form is filled in correctly before it's sent to your server.
Great for "required fields" such as email addresses!
Validating form input with Java Script is easy to do and can save a lot of unnecessary calls to the server as all processing is handled by the web browser.
It can prevent people from leaving fields blank, from entering too little or too much or from using invalid characters.
The condition will be as follows: is shown to the user and finally we are returning false; that is very important.