crbug.com/244406

by int32_t

HTML

<form>
<select name="test" id="test" multiple size="3" >
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
<option value="4">Option 4</option>
<option value="5">Option 5</option>
<option value="6">Option 6</option>
<option value="7">Option 7</option>
</select>
</form>

JavaScript

var t = document.getElementById("test");

function handleChange() {
    alert('change');
}
function handleDown() {
    var o = document.createElement('option');
    o.textContent = "Option ++";
    t.appendChild(o);
}
t.addEventListener('change', handleChange, false);
document.body.addEventListener('mousedown', handleDown, true);