请始终定义图像尺寸。这样做会减少闪烁,因为浏览器会在图像加载之前为图像预留空间。
img src= html5.gif alt= HTML5 >但是精简空格更易阅读,But space-less is easier to read, and groups entities better together:
link rel= stylesheet href= styles.css请勿使用没有必要的空行和缩进。没有必要在短的和相关项目之间使用空行,也没有必要缩进每个元素:
不必要:
body h1 Famous Cities /1 h2 Tokyo /h2 Tokyo is the capital of Japan, the center of the Greater Tokyo Area, and the most populous metropolitan area in the world. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family. /body更好:
body h1 Famous Cities /1 h2 Tokyo /h2 Tokyo is the capital of Japan, the center of the Greater Tokyo Area,and the most populous metropolitan area in the world.It is the seat of the Japanese government and the Imperial Palace,and the home of the Japanese Imperial Family. /body表格示例:
table th Name /th th Description /th td A /td td Description of A /td td B /td td Description of B /td /table列表示例:
li LondonA /li li Paris /li li Tokyo /li /ol为了确保恰当的解释,以及正确的搜索引擎索引,在文档中对语言和字符编码的定义越早越好:
!DOCTYPE html html lang= en-US head meta charset= UTF-8 title HTML5 Syntax and Coding Style /title /head
!-- This is a long comment example. This is a long comment example. This is a long comment example. This is a long comment example. This is a long comment example. This is a long comment example.
长注释更易观察,如果它们被缩进两个空格的话。
如果您从对大小写不敏感的服务器转到一台对大小写敏感的服务器上,这些小错误将破坏您的网站。
为了避免这些问题,请始终使用小写文件名(如果可以的话)。
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