node.js copy to clipboard

                                    // Copy to clipboard in node.js
const child_process = require('child_process')

// This uses an external application for clipboard access, so fill it in here
// Some options: pbcopy (macOS), xclip (Linux or anywhere with Xlib)
const COPY_APP = 'xclip'
function copy(data, encoding='utf8') {
  const proc = child_process.spawn(COPY_APP)
  proc.stdin.write(data, {encoding})
  proc.stdin.end()
}

                                    const copyToClipboard = () => {

  navigator.permissions.query({name: "clipboard-write"}).then(result => {
    if (result.state == "granted" || result.state == "prompt") {
      // write to the clipboard now
      updateClipboard('I copy this string');
    }
  });
};

const updateClipboard = (newClip) => {
  
  navigator.clipboard.writeText(newClip).then(() => {
    // clipboard successfully set
	console.log('success');
  }, () => {
    // clipboard write failed
    console.log('Failed to copy');
  });
};

const btn = document.getElementById('copy-button');

btn.addEventListener('click', copyHashtagToClipboard);

                                    function copy() {
  var copyText = document.querySelector("#input");
  copyText.select();
  document.execCommand("copy");
}

document.querySelector("#copy").addEventListener("click", copy);

                                    const el = document.createElement('textarea');
el.value = str;	//str is your string to copy
document.body.appendChild(el);
el.select();
document.execCommand('copy');	// Copy command
document.body.removeChild(el);