copy link to clipboard

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

document.querySelector("#copy").addEventListener("click", copy);document.getElementById("copy-text").onclick = function() {
  this.select();
  document.execCommand('copy');
  alert(window.getSelection().toString());
}function copyToClipboard(text) {
  var input = document.body.appendChild(document.createElement("input"));
  input.value = text;
  input.focus();
  input.select();
  document.execCommand('copy');
  input.parentNode.removeChild(input);
}var copyTextareaBtn = document.querySelector('.js-textareacopybtn');

copyTextareaBtn.addEventListener('click', function(event) {
  var copyTextarea = document.querySelector('.js-copytextarea');
  copyTextarea.focus();
  copyTextarea.select();

  try {
    var successful = document.execCommand('copy');
    var msg = successful ? 'successful' : 'unsuccessful';
    console.log('Copying text command was ' + msg);
  } catch (err) {
    console.log('Oops, unable to copy');
  }
});

////html code below
<p>
  <button class="js-textareacopybtn" style="vertical-align:top;">Copy Textarea</button>
  <textarea class="js-copytextarea">Hello I'm some text</textarea>
</p>function (container_id, as_html) {
        /*
        isEmpty = function (val) {
              return (val === undefined || val == null || val.length <= 0) ? true : false;
          };
        */
        as_html = isEmpty(as_html) ? false : true;

        //console.log('copyToClipboard: ' + container_id);
        var elem = document.getElementById(container_id);

        // create hidden text element, if it doesn't already exist
        var targetId = "_hiddenCopyText_";
        var isInput = elem.tagName === "INPUT" || elem.tagName === "TEXTAREA";
        var origSelectionStart, origSelectionEnd;
        if (isInput) {
            // can just use the original source element for the selection and copy
            target = elem;
            origSelectionStart = elem.selectionStart;
            origSelectionEnd = elem.selectionEnd;
            //console.log ('_is_input = true');
        } else {
            // must use a temporary form element for the selection and copy
            //console.log ('_is_input = false, creating a textarea = ' + targetId);
            target = document.getElementById(targetId);
            if (!target) {
                var target = document.createElement("textarea");
                target.style.position = "absolute";
                target.style.left = "-9999px";
                target.style.top = "0";
                target.id = targetId;
                document.body.appendChild(target);
            }

            var content = $.trim(as_html ? $(elem).html() :  $(elem).text());
            $(target).text( content);
            console.log ('text_content', content);
        }
        // select the content
        var currentFocus = document.activeElement;
        target.focus();
        target.setSelectionRange(0, content.length);

        // copy the selection
        var succeed;
        try {
            succeed = document.execCommand("copy");
        } catch (e) {
            succeed = false;
        }
        // restore original focus
        if (currentFocus && typeof currentFocus.focus === "function") {
            currentFocus.focus();
        }

        if (isInput) {
            // restore prior selection
            elem.setSelectionRange(origSelectionStart, origSelectionEnd);
        } else {
            // clear temporary content
            $(target).text('');
        }

        return succeed;
    }document.execCommand("copy");<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<p id="p1">P1: I am paragraph 1</p>
<p id="p2">P2: I am a second paragraph</p>
<button onclick="copyToClipboard('#p1')">Copy P1</button>
<button onclick="copyToClipboard('#p2')">Copy P2</button>
<br/><br/><input type="text" placeholder="Paste here for test" />