// 打印
  const handlePrint = () => {
    console.log('打印一下!')
    // 获取打印内容
    let Pdiv = document.getElementById('printBody')
    // 创建iframe
    let iframe = document.createElement('IFRAME')
    iframe.setAttribute(
      'style',
      'position:absolute;width:0px;height:0px;left:-500px;top:-500px;'
    )
    
    document.body.appendChild(iframe)
    let doc = iframe.contentWindow.document
    // 打印时去掉页眉页脚
    doc.write('<style media="print">@page {size: auto;  margin: 0mm; }</style>')
    // 打印内容放入iframe中
    doc.write(Pdiv.innerHTML)
    let ys = 'html,body{height:auto}'
    let style = document.createElement('style')
    style.innerText = ys
    doc.getElementsByTagName('head')[0].appendChild(style)
    doc.close()
    // 开始打印iframe内容
    iframe.contentWindow.focus()
    iframe.contentWindow.print()
    if (navigator.userAgent.indexOf('MSIE') > 0) {
      //打印完删除iframe
      document.body.removeChild(iframe)
    }
  }