对比当前页面 window 的特殊键名

diff-window-keys.js

(() => {
  const iframe = document.createElement("iframe")
  iframe.onload = () => {
    const iframeKeys = Object.keys(iframe.contentWindow)
    document.body.removeChild(iframe)
    const windowKeys = Object.keys(window)
    const keys = windowKeys.filter(key => {
      return iframeKeys.indexOf(key) === -1
    })
    console.group("diff result：")
    for (let key of keys) {
      console.log(`${key} => `, window[key])
    }
    console.groupEnd()
    console.log(keys)
  }
  document.body.appendChild(iframe)
})()