Validating xhtml code


25-Oct-2017 11:05

For example See the Pen hbuxg by Site Point (@Site Point) on Code Pen.

If you’re new to Regular Expressions, you can check out this document on Web to give you a head start.

But that is changing or rather has changed because validation can now be done using HTML5 without having to write complex Java Script validation code.

HTML5 includes a fairly solid form validation mechanism powered by the following .

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.

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Plus, explore tools and services that will help you test your campaigns.By adding this attribute to a form field, the browser requires the user to enter data into that field before submitting the form.This replaces the basic form validation currently implemented with Java Script, making things a little more usable and saving us some development time.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.

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This attribute specifies a format (in the form of a Java Script Regular Expression) that the field value is checked against.It is a common maxim in security to trust nobody, hence never trust the user to enter correct or valid form values.



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