HTML code validation

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In this lesson it will be about code validation. You need to validate html code to avoid errors in html code even your web page looks good. Furthermore if web page doesn’t look good and you can’t find out why, validation can help you to find problem.

Code validation makes with http://validator.w3.org/
There are three ways to check if code is valid:

  • validate bu uri – you paste url to input field.
  • validate by file upload – you upload file, and service checks validate.
  • validate by direct code input – you paste html code to textarea.

Validator give you list of errors, dividing it into three categories: info, warning , error .

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