Javascript - fill in the textbox dynamically
<p>Is it possible to fill textbox using javascript?
I have this code</p>

<pre><code>&lt;input type="text" id="output"&gt;
</code></pre>

<p>After using the script, I want to have selected value in textbox. I'm very new to javascript and I tried this</p>

<pre><code>javascript: document.getElementById('output').innerHTML = "100";
</code></pre>

<p>However, it doesn't work as I expected. So after using the script I want HTML look like </p>

<pre><code>&lt;input type="text" id="output" value="100"&gt;
</code></pre>

<p>Is there any way to manage this? Thanks</p>