Difference between [removed].href and top.location.href

Question

Can Anyone tell me the difference between window.location.href and top.location.href ?

And also where to use which one.

And which

Answer 1

top object makes more sense inside frames. Inside a frame, window refers to current frame's window while top refers to the outermost window that contains the frame(s). So:

window.location.href = 'somepage.html'; means loading somepage.html inside the frame.

top.location.href = 'somepage.html'; means loading somepage.html in the main browser window.

Two other interesting objects are self and parent.