Common HTML Errors

 

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Common Mistakes and Errors In HTML Code

(Some links on this page take you to details in the HTML Tag Reference. Bookmark this page in your Favorites so you can come back to it later.)

Avoid mismatched or missing quotes in attribute values
Incorrect: <th colspan>
Incorrect: <th colspan=3>
Incorrect: <th colspan="3'>
Correct: <th colspan="3">

Valid HTML 5