jquery - Overwrite function javascript in child window? -

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i open window : var popup =window.open(url,'image', 'directories=no,height=640,location=no,menubar=no,resizable=yes,scrollbars=yes,status=no,toolbar=no,width=680');

in child window opened have function openfile(url); can overwrite function in parent window? or bind click event element in child window parent window (because can't edit child page). parent , child window in same domain.

here how make it:

var popup =window.open(url,'image', 'directories=no,height=640,location=no,menubar=no,resizable=yes,scrollbars=yes,status=no,toolbar=no')  function waitonloadwindow(){     var body = popup.document.getelementsbytagname("body");     // not loaded yet     if(!body[0] || !popup.openfile){         settimeout(waitonloadwindow, 50);     }else{         // replace child window function here         popup.openfile = function(url){ alert('replaced');}     } } waitonloadwindow();

a more generic way (if have more 1 function replace) :

function replacewindowfunction(win, fnname, fnfunction) {     var body = popup.document.getelementsbytagname("body");      if(!body[0] || !popup[fnname]){ // wait loading         settimeout(function() {             replacewindowfunction(win, fnname, fnfunction);         }, 50);     }else{         // replace child window function here         popup[fnname] = fnfunction;     } }  // usage: var popup = window.open("test.html",'image', 'directories=no,height=640,location=no,menubar=no,resizable=yes,scrollbars=yes,status=no,toolbar=no') replacewindowfunction(popup, 'openfile', function() { alert('replaced'); } );

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