移动端的iframe骚操作``` ``` ``` setIframeContent(str) { const newHT

          width="100%"
          height="100%"
          style="position: static; top: 0; left: 0"
          border="0"
          src=""
          id="iframeBox"
          frameborder="0"></iframe>

      const newHTML = str
      const myIframe = document.querySelector('#iframeBox')
      console.log(myIframe, 1212212121)
      const iframeDoc = myIframe.contentDocument || myIframe.contentWindow.document
      iframeDoc.open()
      iframeDoc.write(newHTML)
      iframeDoc.close()
    },