HTML Label element triggers onchange events

The HTML <label> element triggers a change event whenever the value of the associated form element changes, even if the input is hidden with display: none.

<label for="input">
  <p>If you click me, the input will change since is wrapper into a `label` tag.</p>
  <input type="checkbox" name="input" id="input" onchange="onchange" />
</label>

Note: To associated a input with a label tag, you need to use the for attribute.