base target="" specifies the target of the base link to open the frame

base target="" specifies the target of the base link to open the frame
<base target=_blank> changes the target frame of the basic link to a new page. If you are not very familiar with HTML, CSS and JS, it is not recommended to use this method and instead use independent control.

In fact, many tags such as <a> and <form> support the attribute target="black". It is recommended to set it separately in such tags, for example:

Copy code
The code is as follows:

<a href="xxx.htm" target="_blank">Hyperlink content</a>
<form action="xxx.htm" target="_blank">Expression content<input type="submit" value="Submit button"></form>

If this sentence is not added, the default is to refresh the current page, that is, target="_self".

Copy code
The code is as follows:

<base target=Right>

The function of this statement is to add target=Right to all <a href=...> link instructions that do not specify a target. It has nothing to do with your <select>.

For example, your original program is as follows:

Copy code
The code is as follows:

<base target=Right>
<a href=p1.html>Page 1</a>

<a href=p2.html>Page 2</a>

<a href=i1.html target=_blank>Home</a>

<a href=i2.html target=_self>Refresh</a>

Then the following code is completely equivalent:

Copy code
The code is as follows:

<a href=p1.html target=Right>First Page</a>

<a href=p2.html target=Right>Page 2</a>

<a href=i1.html target=_blank>Home</a>

<a href=i2.html target=_self>Refresh</a>

It has no effect on any other code. The above target=Right means in the frame named Right (or FRAME). If there is no window called Rigth, then open a new window and name it Right. The next time you open other pages to Right, they will be opened in this window. target=_blank means opening in a new window, target=_self means opening in the current window.

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