Javascript 回顾 1 文件夹以获取父目录的图像
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Javascript lookback 1 folder to get image of parent Directory
提问by user2538403
My site layout (for this example):
我的网站布局（对于这个例子）：
localhost/mydomain/
-localhost/mydomain/pics
-localhost/mydomain/somepages/arandompage.php
I want to access picture from here:
我想从这里访问图片：
localhost/mydomain/index.php
I did this:
我这样做了：
<img id='4' src='pics/somepic.1.jpg'>
The mouseover snippet:
鼠标悬停片段：
{ $('#'+someId).attr('src', 'pics/somepic.'+num+'.jpg');
This is working. But when I wanted to access it from here it doesn't work.
But when you go localhost/mydomain/somepages/arandompage.phpit obviously doesn't work, no longer relative.
这是有效的。但是当我想从这里访问它时它不起作用。但是当你去的时候localhost/mydomain/somepages/arandompage.php它显然不起作用，不再是相对的。
<img id='4' src='../pics/somepic.1.jpg'>
Ok here obviously that'll fix the display image. It is not working in JavaScript.
好的，显然这将修复显示图像。它不适用于 JavaScript。
{ $('#'+videoId).attr('src', '../pics/somepic.'+num+'.jpg'); /
I don't know what to do here, but yes all I need is the JavaScript to just look back 1 folder to get that img src. That's all. If you answer please insert what should be here in:
我不知道在这里做什么，但是是的，我需要的只是 JavaScript 来查看 1 个文件夹以获取该 img src。就这样。如果您回答，请插入此处应包含的内容：
`{ $('#'+videoId).attr('src', ====> 'pics/somepic.'+num+'.jpg');`
So that it goes to the parent directory.
以便它转到父目录。
P.S. I tried absolute paths but to no avail either.
PS我尝试了绝对路径，但也无济于事。
采纳答案by T.J. Crowder
The key thing is to remember what the browser'sview of the hierarchy is:
关键是要记住浏览器对层次结构的看法是什么：
Assuming
localhost/mydomainis the rootof your site, then:...a page like
localhost/mydomain/somepage.php:will appear at e.g.
http://example.com/somepage.phpfrom the browser's POVand can use
pics/somepic.jpgor/pics/somepic.jpgfor the pic.
...a page like
localhost/mydomain/somepages/somepage.php:will appear at e.g.
http://example.com/somepages/somepage.phpfrom the browser's POVand can use
../pics/somepic.jpgor/pics/somepic.jpgfor the pic.
Assuming
localhostis the root of your site instead, then:...a page like
localhost/mydomain/somepage.phpwill appear at e.g.,
http://example.com/mydomain/somepage.phpfrom the browser's POVand can use
pics/somepic.jpgor/mydomain/pics/somepic.jpgfor the pic.
...a page like
localhost/mydomain/somepages/somepage.phpwill appear at e.g.,
http://example.com/mydomain/somepages/somepage.phpfrom the browser's POVand can use
../../pics/somepic.jpgor/mydomain/pics/somepic.jpgfor the pic.
假设
localhost/mydomain是您网站的根目录，则：...一个页面，如
localhost/mydomain/somepage.php：将出现在例如
http://example.com/somepage.php来自浏览器的 POV并且可以使用
pics/somepic.jpg或/pics/somepic.jpg用于图片。
...一个页面，如
localhost/mydomain/somepages/somepage.php：将出现在例如
http://example.com/somepages/somepage.php来自浏览器的 POV并且可以使用
../pics/somepic.jpg或/pics/somepic.jpg用于图片。
假设
localhost是您网站的根目录，则：...一个页面
localhost/mydomain/somepage.php将出现在例如，
http://example.com/mydomain/somepage.php来自浏览器的 POV并且可以使用
pics/somepic.jpg或/mydomain/pics/somepic.jpg用于图片。
...一个页面
localhost/mydomain/somepages/somepage.php将出现在例如，
http://example.com/mydomain/somepages/somepage.php来自浏览器的 POV并且可以使用
../../pics/somepic.jpg或/mydomain/pics/somepic.jpg用于图片。
