In the previous pages we have discussed how to check for non-empty, check for all letters, check for all numbers, check for decimal numbers, check for letters and numbers, check string length and email validation using JavaScript.

Javascript function to check a date in dd/mm/yyyy format.

Javascript function to validate an email. Also discussed an email structure, example of valid email and invalid email.

Javascript function to determine the length of the value of a particular field in a HTML form.

Javascript function to check if a field input contains letters and numbers only.

Javascript function to check if a field input contains numbers as well as decimal numbers.

Javascript function to check if a field in a html form contains all numbers or not.

Javascript function to check if a field in a html form contains all letters or not.

Javascript function to check if a field in a html form is empty or not.

This tutorial will show you how to create a JavaScript-enabled form that checks whether a user has filled in the form correctly before it's sent to the server.