(function(){
  var copyToClipboard = str => {
    var el = document.createElement('textarea');  // Create a <textarea> element
    el.value = str;                                 // Set its value to the string that you want copied
    el.setAttribute('readonly', '');                // Make it readonly to be tamper-proof
    el.style.position = 'absolute';
    el.style.left = '-9999px';                      // Move outside the screen to make it invisible
    document.body.appendChild(el);                  // Append the <textarea> element to the HTML document
    var selected =
      document.getSelection().rangeCount > 0        // Check if there is any content selected previously
        ? document.getSelection().getRangeAt(0)     // Store selection if found
        : false;                                    // Mark as false to know no selection existed before
    el.select();                                    // Select the <textarea> content
    document.execCommand('copy');                   // Copy - only works as a result of a user action (e.g. click events)
    document.body.removeChild(el);                  // Remove the <textarea> element
    if (selected) {                                 // If a selection existed before copying
      document.getSelection().removeAllRanges();    // Unselect everything on the HTML document
      document.getSelection().addRange(selected);   // Restore the original selection
    }
  };


  copyToClipboard("foo\tbar")

  console.log("copied")
}())