title: Use jQuery to insert values into input fields?
body: <p>In the code below, I would like to use jQuery to put the word <code>"username"</code> into the value field. Then, when the user selects the input box, the word "username" would disappear leaving an empty input field for the user to input his username. </p>
  
  <p>Can this be done with jQuery?</p>
  
  <pre><code>&lt;p class="login-username"&gt;
      &lt;input type="text" name="log" id="user_login" class="input" value="" size="20" tabindex="10"&gt;
  &lt;/p&gt;
  </code></pre>