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Home Backend Development PHP Tutorial a标签跳转链接问题

a标签跳转链接问题

Jun 06, 2016 pm 08:31 PM
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我在wamp环境下写了一个php项目,其中有个<a href="www.douban.com"></a>,并没有跳转到百度,而是在本页内跳转,加上http://www.douban.com就可以跳转到了,这是什么原因啊?

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我在wamp环境下写了一个php项目,其中有个<a href="www.douban.com"></a>,并没有跳转到百度,而是在本页内跳转,加上http://www.douban.com就可以跳转到了,这是什么原因啊?

href的格式

  1. xxx 相对路径跳转(前面没有/) 跳转到当前目录下的xxx, 如当前URL为xxx.com/aaa/bbb ,则跳转到xxx.com/aaa/xxx
  2. /xxx 绝对路径跳转(最前面一条/) 跳转到跟目录的xxx,如当前URL为xxx.com/aaa/bbb ,则跳转到xxx.com/xxx
  3. schema://host/uri 全路径跳转(协议://开头) 跳转到特定的url,host必须有,后面的/uri可以为空

你的格式不符合全路径跳转的格式,默认就按照第一种处理了

补充一下评论里的情况

//host/uri 的方式(两条杠开头),相当于省略协议,采用同本页面相同的协议

楼上的基本上是对的,补充一点如果你不想写协议,可以在路径前写上//,如//www.douban.com 这个采用的是与你的网站相同的协议发送请求。

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