为什么要有一个“javascript”的超文本页?
It is a common practice for a page to degrade gracefully in case JavaScript is disabled. For example, instead of a JavaScript slider you may want to present a combo box, or extra submit buttons. This may be required for accessibility and compatibility.
One way of doing so it to load the page ready for JavaScript-disabled clients, and use JavaScript to add a class to the <body> element (or other elements). CSS rules can use this class to change the look of the page - when you know JavaScript is enabled (after you ve just run it), you can hide these controls, and rely on a richer interface.
很可能,这是指根据客户是否允许使用ava印而提供的单页。
因为无论谁写过,都认为“javascript”是它拥有的适当类别名称? 我指的是,它不是一个无效的阶级名称......
假设你指的是一个CSS级,以控制格式,其名称不相干。
Something like:
<span category=javascript >a = 3 * 5;</span>
可能同样容易:
提炼; Ben >a = 3 * 5;</span>
在编辑CSS文件时,将其放在本部分可能不如一份催复函。
或许,用Javascript syntax突出显示该页的代码吗?
<code class="javascript">document.write("Ben rules!")</code>
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