Mouse Cursor Position

document.compatMode

Quirks mode[BACKCompat] : Standard-compliant mode is not switched on.
Strict mode[CSS1Compat] : Standard-compliant mode is switched on.

function getPosition(e) {
    e = e || window.event;
    var cursor = {x:0, y:0};
    if (e.pageX || e.pageY) {
        cursor.x = e.pageX;
        cursor.y = e.pageY;
    } 
    else {
        var de = document.documentElement;
        var b = document.body;
        cursor.x = e.clientX + 
            (de.scrollLeft || b.scrollLeft) - (de.clientLeft || 0);
        cursor.y = e.clientY + 
            (de.scrollTop || b.scrollTop) - (de.clientTop || 0);
    }
    return cursor;
}

Test Sample

<html> <head> <script type=“text/javascript”> function open_win() { window.open(“./test/js/test_mouse_event_x_y.html”,“_blank”,“toolbar=yes, location=yes, directories=no, status=no, menubar=yes, scrollbars=yes, resizable=no, copyhistory=yes, width=400, height=400”); } </script> </head>

<body> <a href=“#” onclick=“open_win()” style=“text-decoration:underline;color:#900B09”>What are the coordinates of the cursor?</a>

</body>

</html>

トレース: • event