Should checks for redirection on form submit be done in the onunload event or in the ajax function?

I have a form that is pre-filled with data from a MySQL database entry. When the form is submitted, I need to validate if any of the 15 field values in the form have been changed. If there are changes, I want to trigger a PHP script to update the database entry and then load the main page content into my div (redirection will be handled by the PHP script). If no changes were made, I simply want to load the main page content directly into my div.

My question is, what would be considered best practice: performing the validation on form unload, or including the validation check within the ajax function that calls the appropriate script based on the result?

javascriptajax

Answer №1

My preferred approach is to trigger a function when the save button is clicked, which will verify any changes in values and then execute a php-file using AJAX. This method provides a straightforward solution for this task.

Answer №2

Based on what you've explained, it seems like you are specifically looking for changes. When dealing with basic form validations such as data input errors, range checking, and change detection, using JavaScript would be a more efficient approach. This way, you can integrate your code with an ajax function.

In the scenario you mentioned, if the form passes validation, you can proceed to submit the data via ajax. However, if there are validation errors, simply display the content within a div element.

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