html标签强大而正确的做事方式？

Question

Take the code below,

<strong><a href="#">Link</a></strong>

It will make the link bold.

Now consider this next example, does exactly the same thing, but which is the one to use from a SEO and semantic point of view?

<a href="#"><strong>Link</strong></a>

Answer 1

There is nothing significant to choose between them.

You should only use these if you want a particular link to have stronger emphasis. If you just want bold links, then you should use a { font-weight: bold; } a { font-weight: bold; } in your stylesheet.

Answer 2

In my experience, wrapping anchors around the text only, or else around the minimum markup required, minimizes browser bugs.

I respectfully disagree with Quentin's comment above. <strong> offers true semantic value, while font-weight: bold; is by definition a visual semantic descriptor. In support of this assertion, here are links to W3C definitions for both along with the first sentence from each.

• http://www.w3.org/TR/REC-CSS1/#font-weight

  The 'font-weight' property selects the weight of the font.

• http://www.w3.org/TR/html5/text-level-semantics.html#the-strong-element

  The strong element represents strong importance for its contents.

To get a sense of how deliberate the semantic meanings of elements like <strong> are, look at the definition changes for <b> and <strong> in the W3 documentation for changed elements in HTML5: www.w3.org/TR/html5-diff/#changed-elements