Test Tag Pre

<script type='text/javascript'>
var pres = document.getElementsByTagName(&quot;pre&quot;);
for (var i = 0; i &lt; pres.length; i++) {
  pres[i].addEventListener(&quot;dblclick&quot;, function () {
    var selection = getSelection();
    var range = document.createRange();
    range.selectNodeContents(this);
    selection.removeAllRanges();
    selection.addRange(range);
  }, false);
}
</script>

Category: Tag Pre