js copy to clipboard from string code example

Example 1: javascript text to clipboard

function copyToClipboard(text) {
   const elem = document.createElement('textarea');
   elem.value = text;
   document.body.appendChild(elem);
   elem.select();
   document.execCommand('copy');
   document.body.removeChild(elem);
}

Example 2: 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()
}