title: Add a string of text into an input field when user clicks a button
body: <p>Basically just trying to add text to an input field that already contains a value.. the trigger being a button..</p>
  
  <p>Before we click button, form field would look like.. (user inputted some data)</p>
  
  <pre><code>[This is some text]
  (Button)
  </code></pre>
  
  <p>After clicking button, field would look like.. (we add <code>after clicking</code> to the current value)</p>
  
  <pre><code>[This is some text after clicking]
  (Button)
  </code></pre>
  
  <p>Trying to accomplish using javascript only..</p>