But an HTML document (or webpage, it means the same thing) requires a specific structure in order to be valid. Why do we care about validating an HTML document? correct: a valid document is correctly displayed by the browser. debugging: invalid HTML code can trigger bugs hard to target.
How do you know if HTML is valid?
- Get the HTML string into a variable.
- Create a RegExp which checks for the validation.
- RegExp should follow the rules of creating a HTML document.
What is my valid website?
If you already have a website, you can check the health of the code under the surface by using the free tool provided by the World Wide Web Consortium. Go to , type in the address of each page of your website, and see how many errors it contains.
