Getting values from database and validating in javascript

Posted by / 03-Mar-2018 04:54

This means you can use Java Script to check for, and alert the user to, credit card typos.However, to see whether a credit card has sufficient funds requires communicating with the credit card company and that can only be done using a server side programming language.

The full code looks like this: The same approach can be used to validate the email address.

This article will explain some basics about form validation and then illustrate how to validate form fields using j Query.

There are two types of validation: client side validation and server side validation.

Therefore, we'll create CSS classes to represent these possible outcomes.

Now that we've created a working form, we need to add some j Query and Java Script to validate fields and change the CSS classes that were created earlier.

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The only difference is that now we want to check whether the email address looks like an email address.

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