The target attribute of tag a, and the target attribute of tag
_ Blank
The browser always loads the target document in a new and untitled window.
_ Self
The <a> label of this target value is the default target for all unspecified targets, so that the target document is loaded and displayed in the same framework or window as the source document. This goal is redundant and unnecessary unless used together with the target attribute in the document title <base> tag.
_ Parent
This object enables the document to be loaded into the parent window or contains the framework set of the Framework referenced by the hyperlink. If the reference is in a window or in a top-level framework, it is equivalent to the target _ self.
_ Top
This object causes the document to load the window containing this hyperlink. The _ top object will clear all contained frameworks and load the document into the entire browser window.