Javascript validation simple example code
Here is a simple form validation code that validates a simple form No additional library is used. It is pure Javascript First step - add an event listner for form submit event Here is the code that does that step: document.getElementById('myform').addEventListener('submit', validateForm); function validateForm() { } First, we get the form DOM object using the ID attribute of the form. Then we listen to the form submit event. Next, we have to validate each of the fields in the form.