Why on sites like Stack Overflow, Techcrunch, Smashingmagazine, etc. are the page titles (i.e. the text at the top of the page) clickable URLs that redirect to the same page that the user is on?Why on sites like Stack Overflow, Techcrunch, S
阅读背景：
为什么某些网站上的网页标题（包括Stack Overflow）可点击的网址？
来源：互联网
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