target attribute of a tag

target attribute

1. Grammar

< a href="#" target="value"></a>

2. Attribute value

1._blank     

<a href="document.html" target="_blank">my document</a> 

    The browser will open a new window to display the document.html document   
2._parent     <a href="document.html" target="_parent">my document</a>      

                  指向父frameset文档   
3._self       <a href="document.html" target="_self">my document</a>           

                  Load the document into the current page frame  
4._top         <a href="document.html" target="_top">my document</a>          

                  Remove all page frames and replace the frameset document with document.html   

 
Tip 1: Make someone else's page frame unable to reference your web page, add in the file header: <base target="_top">    
Tip 2: Open the connection on the current page or do a refresh, submit to the current page and add in the file header: <base target="_self">