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Script for validating a form in javascript

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You can then adapt this form to your own requirements.

Let's build a simple form with a validation script.

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!

script for validating a form in javascript-28script for validating a form in javascript-57

Let's expand this example with a more complex function that checks lots of form fields.One point to note about Java Script validation is that it can always be circumvented by the user disabling Java Script in their browser, so for secure validation you'll need to write your validating code in your server-side scripts.However, for day-to-day use Java Script is a quick and easy way to check over your forms before they're sent to your server.Our example script works by validating all the form fields at once.This can be a bit confusing for the user, especially if they've missed out more than one field, as they will get lots of alert boxes appearing and they might forget which fields they need to fill in!If the user has not completed more than one field, then they will see an alert box appear for each field that is missing.