What are the standards for writing HTML code?
This time I will bring you what are the specifications for writing HTML code, what are the precautions for writing HTML code, the following is a practical case, let's take a look.
Self-closing tag, no need to close (for example: img input br hr, etc.);
Optional The closing tag must be closed (for example: or );
Reduce the number of tags as much as possible;
<img src="images/google.png" alt="Google"> <input type="text" name="title"> <ul> <li>Style</li> <li>Guide</li> </ul> <!-- Not recommended --> <span class="avatar"> <img src="..."> </span> <!-- Recommended --> <img class="avatar" src="...">
Class and ID
The class should be named after the function or content, not the expression;
class and id word letters are lowercase, and when composed of multiple words, use dash-separation;
Use a unique id as Javascript hook, and avoid creating classes without style information;
<!-- Not recommended --> <div class="j-hook left contentWrapper"></div> <!-- Recommended --> <div id="j-hook" class="sidebar content-wrapper"></div>
AttributesOrder
HTML attributes should appear in a specific order to ensure readability.
id
class
name
data-xxx
src, for, type, href
title, alt
aria-xxx, role
<a id="..." class="..." data-modal="toggle" href="###"></a> <input class="form-control" type="text"> <img src="..." alt="...">
Quotation marks
Use double quotation marks uniformly for the definition of attributes.
I believe you have mastered the methods after reading these cases. For more exciting information, please pay attention to php Chinese website Other related articles!
Related reading:
HTML optimization techniques you must know
How to set the horizontal and vertical centering of HTML elements
How to use HTML and CSS to make a clear message
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