2012-04-14 209 views

回答

0
function getRelativePosition(element, nthparent_of_element){ 
    var posParent = $(nthparent_of_element).position(); 
    var posElement = $(element).position(); 
    return { top: posElement.top - posParent.top, 
      left: posElement.left - posParent.left}; 
} 
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