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Regular expressions (Reg EX) provide a powerful, concise, and flexible means for matching strings of text such as particular characters, words, or patterns of characters.
As a result, the specification doesn’t define an algorithm for validating these, hence it isn’t supported web browsers at the time of writing. The pattern attribute will likely make a lot of developers, especially those working on the front-end, happy.
Let’s examine these new form attributes to see how they can aid form validation.
This form attribute indicates what kind of input control to display such as the popular validates the field to ensure the entered data is in fact a valid email address.
HTML5 includes a fairly solid form validation mechanism powered by the following .
Thanks to these new attributes in HTML5, you can delegate some data verification functions to the browser.