AJAX Required Fields in the Validator in JavaScript
Ajax and jQuery offer a validation function you use to validate the data entered by your users in a website form. The Ajax function ensures that the user typed in a value, so you provide data integrity for your database and sales campaigns. The jQuery functions use the JavaScript syntax for Ajax.
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Validation
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The term "validation" means that your website pages and forms guarantee their users enter data correctly on forms before storing the data in a database. Validation also ensures a properly formatted email appears on a form. Validation stops a user from entering a blank form, so you and your employees do not need to waste time verifying data or eliminating blank submissions.
Ajax
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Ajax is an asynchronous language that lets you submit the website forms without requiring the user to reboot. You can validate the form's data using the "validate" Ajax function or using a custom validation process in the PHP processing page used to transfer the data from the form to the database.
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Implementation
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The Ajax language is written in JavaScript syntax. You create a "submit" function that links to the submission button on your form. You place the validation code in this function. If the user has not filled out the form to your satisfaction, an error message appears. You show that error message in a div container next to the form.
Considerations
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Security is always an issue when you connect outside users to your database. A method called "scrubbing" removes database characters from the data to stop SQL injection hacks. Use this method to add to security in addition to validating data.
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