copyToClipboard.js

var copy = function (text) {
  var range = document.createRange();
  var elem = document.createElement('div');
  var parent = document.createElement('div');
  window.getSelection().removeAllRanges(); 
  elem.innertText = text;
  parent.appendChild(elem);
  range.selectNode(elem);
  window.getSelection().addRange(range);
  document.execCommand('copy');
  window.getSelection().removeAllRanges(); 
};