What does href = # In the link mean,

What does href = # In the link mean,

Link to the current page.
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It is usually used as follows::
<A href = "#" onclick = "window. close ()"> close </a>
Linking href = "#" means connecting to the current page is meaningless, and the page will not be refreshed. The key is the onclick next. When you click "close", the window will be executed. close () code.

You may say why not directly write <a onclick = "window. close ()"> close </a>
If the two words are written in this way, they will not be processed as superlinks, and the effect will look worse. You can try it on your own. When creating a webpage, the parameters in the html language are used to specify the url ### of the link, that is, the link to this page, and href = "Address" is the link to this page. The default page is displayed, A new window is not displayed. If # is removed when the connection is null, the mouse and hand cursor are not displayed. Generally, it is a fake link pointing to this page.
You can also keep up with the anchor id behind #. This is actually another usage of bookmarks.

Create bookmarks
Syntax: <a name = "bookmarkname"> text </a>
Bookmarks linked to the same page (use)
Syntax: <a href = "# bookmark name"> link text </a>
Bookmarks linked to different pages
Syntax: <a href = "link file address # bookmarkname"> link text </a> (note the quotation marks and)

Under normal circumstances, click the <a href = "# bookmark name"> link text </a> link, the cursor will automatically jump to the following page: <a name = "bookmarkname"> text </a>.

However, you can write it as <a href = "#"> link text </a> without writing a bookmarked name, it is actually nothing to jump. Generally, href = "#" is returned only when <a onclick = ""> "#"
When the link is empty, the display will show the effect of The Link (for example, the mouse becomes a small hand), but there is no page Jump.

 

From: http://www.jb51.net/web/69028.html