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So somewhere down the line, every web developer needs to do form validation, so you've got a form

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you need to validate the input field, such as if it's an email, if it's a number, and also if the

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TextField has been actually filled out and this can be done with JavaScript.

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And I know each HTML5 has a really good part that's been added to it that's going to allow you to add

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this to the input fields so it doesn't hurt to have JavaScript doing the same thing as well.

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And of course, with JavaScript, you can style it and make a look a whole lot better.

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So let me show you.

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So this particular form is going to listen for the click and it's going to test to see if these values

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are proper in the fields.

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So it's looking for a valid email address.

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It's also looking for a password that needs to be a certain number of characters and then also a username.

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So as long as you fill those out and you filled it out properly, then at that point you can submit

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the form.

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It's going to be using regex in order to pattern match to make sure that we do have the right field

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input.