正文未定义

var body;

var Test = {
initializeBody: function(e) {
  if (!e.originalTarget.defaultView.frameElement) {
    body = e.target.ownerDocument.getElementsByTagName(\'body\')[0].cloneNode(true);
  }
}
}

window.addEventListener(\"DOMContentLoaded\", function(e) { Test.initializeBody(e); }, false);

body

Error console

body is undefined

body

body

!e.originalTarget.defaultView.frameElement

false