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This article leads you through basic concepts and examples about form validation.
For more information beyond this tutorial, see the Constraint validation guide. When you enter data, the web application checks it to see that the data is correct.
Execution procedure used by combatant command components, supporting combatant commanders, and providing organizations to confirm to the supported commander and US Transportation Command that all the information records in a time-phased force and deployment data not only are error free for automation purposes, but also accurately reflect the current status, attributes, and availability of units and requirements.
Unit readiness, movementdates, passengers, and cargo details should be confirmed with theunit before validation occurs.
Form validation helps us to ensure that users fill out forms in the correct format, making sure that submitted data will work successfully with our applications.
See also independent review; time-phased force and deployment data; verification.
To clarify, I’m looking for a decent regular expression to validate URLs that were entered as user input with.
If the information is correct, the application allows the data to be submitted to the server and (usually) saved in a database; if the information isn't correct, it gives you an error message explaining what needs to be corrected.
Form validation can be implemented in a number of different ways.