how to copy from js the lines of an html

1function copyToClipboard(element) {
2  var $temp = $("<textarea>");
3  var brRegex = /<br\s*[\/]?>/gi;
4  $("body").append($temp);
5  $temp.val($(element).html().replace(brRegex, "\r\n")).select();
6  document.execCommand("copy");
7  $temp.remove();
8}
9
10$( "#FailCopy" ).click(function() {
11  alert("Well done! div #error-details has been copy to your clipboard, now paste it in the notepad or email!");
12});