Quick-n-dirty editor for browser localStorage

boot.html

<div id='tag' contenteditable='true'>boot</div>
<textArea id='B'>
var Xput = function() {
  localStorage[tag.textContent] = B.value;
}
var Xget = function() {
  B.value = localStorage[tag.textContent];
}  
var Xopen = function(name) {
  tag.textContent = name;
  Xget();
}
</textArea>
<script>
  var B = document.getElementById('B');
  var tag = document.getElementById('tag');
  eval(B.value);
  Xput();
</script>