How many css link method in web development?

While placing a link besides a button so that when someone click new display of response or page should be shown show the link attribute named as target decides how to open net link there are four ways named blank self parents top in the blank target attribute the link will be open the new tab and the self attribute the link will be open in the current frame in the parent attribute the link will be open in the parent window and in the top attribute the link will be displayed in whole body of the window.