Codebase Browser
chromium
Go to App

chromium/chrome/test/data/autofill/form_selectlist_preview_no_onchange.html 

<!-- A page that is used to test that the 'onchange' event is not fired for autofill previews. -->
<html>
<head>
<script>
var state_changed = false;
var other_changed = false;
</script>
</head>
<body>
  <form action="https://www.example.com/" method="POST" id="shipping">
  <label for="firstname">First name:</label>
  <input type="text" id="firstname"><br>
  <label for="lastname">Last name:</label>
  <input type="text" id="lastname"><br>
  <label for="address1">Address line 1:</label>
  <input type="text" id="address1"><br>
  <label for="address2">Address line 2:</label>
  <input type="text" id="address2"><br>
  <label for="city">City:</label>
  <input type="text" id="city"><br>
  <label for="state">State:</label>
  <selectlist id="state" onchange="state_changed=true">
    <option value="" selected="yes">--</option>
    <option value="CA">California</option>
    <option value="TX">Texas</option>
  </selectlist>
  </form>
  <selectlist id="other" onchange="other_changed=true">
    <option>First</option>
    <option>Second</option>
  </selectlist>