navigator.clipboard 浏览器原生剪贴板

写入 navigator.clipboard.writeText

navigator.clipboard.writeText('Linr Text to be copied')
  .then(() => {
    console.log('Text copied to clipboard');
  })
  .catch(err => {
    // This can happen if the user denies clipboard permissions:
    console.error('Could not copy text: ', err);
});

读取 navigator.clipboard.readText

navigator.clipboard.readText()
  .then(text => {
    console.log('Pasted content: ', text);
  })
  .catch(err => {
    console.error('Failed to read clipboard contents: ', err);
  });

document.addEventListener('paste', event => {
  event.preventDefault();
  navigator.clipboard.getText().then(text => {
    console.log('Pasted text: ', text);
  });
});

原文：https://developers.google.com/web/updates/2018/03/clipboardapi