When you click the link, the address of the web page that pops up is https://www.VeVb.com/web/ or https://www.VeVb.com/css/, which adds the address to the base link before these relative path files. If the link in the target file does not specify the target attribute, use the target attribute in the base tag.
It is often used in frame structures, such as the left and right frames, and displays the connections in the file in the left frame in the right frame. Just use base to mark it and write its target attribute value as the right frame name, so you no longer need to specify the target attribute for every connection in the file in the left frame.
Other instructions for base href tag:
1. When used, the BASE element must appear in the document's HEAD before any reference to an external source.
2. This element is available in HTML for Microsoft® Internet Explorer 3.0 and in scripts for Internet Explorer 4.0.
3. This element will not be rendered.
4. This element does not need to close the tag.
5. The base tag is actually useful. For example, <base href=_blank> will make all links on this page open on the new page, so there is no need to have target=_blank above each link.
Note in IE7:
1. Additional output characters cannot be added before <html>. Otherwise, IE7 will not parse the base.
2. <base> is a link benchmark mark to change the default parameters of all link marks in the file. It can only adapt to the beginning of the file, i.e. the tag between <head> and < /head>.