原生js 复制内容到剪切板

function copyHandle(content){
  let copy = (e)=>{
      e.preventDefault()
      e.clipboardData.setData('text/plain',content)
      alert('复制成功')
      document.removeEventListener('copy',copy)
  }
  document.addEventListener('copy',copy)
  document.execCommand("Copy");
}

function copyLink(dom) {
      let range = document.createRange();
      let selection = window.getSelection();
      range.selectNode(dom);
      selection.removeAllRanges();
      selection.addRange(range);
      let bool = document.execCommand("copy", "false", null);
      if (bool) {
        alert("复制成功");
      }
      document.execCommand("unselect", "false", null);
}