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Adam Maley5,946 Points
When testing code on validator.w3.org, I got 2 errors.
Error 1: Bad value https://fonts.googleapis.com/css?family=Changa+One|Open+Sans:400,400italic,700,700italic,800 for attribute href on element link: Illegal character in query: | is not allowed. From line 7, column 5; to line 7, column 143 css">↩ <link href='https://fonts.googleapis.com/css?family=Changa+One|Open+Sans:400,400italic,700,700italic,800' rel='stylesheet' type='text/css'>↩ < Syntax of URL: Any URL. For example: /hello, #canvas, or http://example.org/. Characters should be represented in NFC and spaces should be escaped as %20. Common non-alphanumeric characters other than ! $ & ' ( ) * + - . / : ; = ? @ _ ~ generally must be percent-encoded. For example, the pipe character (|) must be encoded as %7C.
Error 2: Warning: Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections. From line 27, column 7; to line 27, column 15 r">↩ <section>↩
Here is my actual code for for error 1:
<link href='https://fonts.googleapis.com/css?family=Changa+One|Open+Sans:400,400italic,700,700italic,800' rel='stylesheet' type='text/css'>
And here for error 2:
<section> <ul id="gallery"> <li> <a href="img/numbers-01.jpg"> <img src="img/numbers-01.jpg" alt=""> <p>Experimentation with color and texture.</p> </a> </li> <li> <a href="img/numbers-02.jpg"> <img src="img/numbers-02.jpg" alt=""> <p>Playing with blending modes in Photoshop.</p> </a> </li> <li> <a href="img/numbers-06.jpg"> <img src="img/numbers-06.jpg" alt=""> <p>Trying to create an 80's style of glows.</p> </a> </li> <li> <a href="img/numbers-09.jpg"> <img src="img/numbers-09.jpg" alt=""> <p>Drips created using Photoshop brushes.</p> </a> </li> <li> <a href="img/numbers-12.jpg"> <img src="img/numbers-12.jpg" alt=""> <p>Creating shapes using repetition.</p> </a> </li> </ul> </section>
Jason AndersTreehouse Moderator 145,631 Points
Neither of those errors are noteworthy, nor will they affect the performance of your site.
I personally put very little thought into the "Code Checkers." Sure, they can be useful the odd time, but for the most part... pretty useless... but that is just my opinion (I'm sure there are others who will disagree).
As for your errors... the checker just doesn't like the pipe symbol in the google fonts link. If you want you could replace that with the HTML entity
|, but it will work just fine with the symbol.
Your second "error" is complaining that you don't have any heading tags. In reality, many sites just use an <h1> and that's it. That's all you want and that's all you may need, but the checker wants more...
So, I hope that clears it up for you. It's up to you how much value you want to put into the so-called "code checkers"
Keep Coding! :)