In JavaScript, what are window.opener, window.parent, and window.top, and when can I use them?
In JavaScript, what are window.opener , window.parent , and window.top , and when can
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In JavaScript, what are window.opener, window.parent, and window.top, and when can I use them?
window.openerrefers to the window that calledwindow.open( ... )to open the window from which it’s calledwindow.parentrefers to the parent of a window in a<frame>or<iframe>window.toprefers to the top-most window from a window nested in one or more layers of<iframe>sub-windowsThose will be
null(or maybeundefined) when they’re not relevant to the referring window’s situation. (“Referring window” means the window in whose context the JavaScript code is run.)