更新并在输入标签中保留值

Question

I'm trying to write a simple javascript program, which updates the value of an input type="hidden" .

In my script, a particular value gets changed too often, so I'm trying to use the below method to store the previous value.

<input type="hidden" value="" id="test">

<script>
alert(document.getElementById('test').value);
document.getElementById('test').innerHTML=10;
alert(document.getElementById('test'));
</script>

10 doesn't gets stored. How can I make it work ? My prime motive is, to have the previous value ( And the last n values changed ), and updated value at the same time. If there are any other methods to obtain this required task, I'd be happy to listen.

Answer 1

Try this example:

alert(document.getElementById('test').value);
document.getElementById('test').value = "10";
alert(document.getElementById('test').value);

http://jsfiddle.net/HTq8J/

Answer 2

Try this:

<input type="hidden" value="" id="test">

<script>
  alert(document.getElementById('test').value);
  document.getElementById('test').value = '10';
  alert(document.getElementById('test').value);
</script>