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                <p>Super secret password list</p>
  <h2>List one items</h2>
  <p>John Doe</p>
  <span class="secret">mypassword</span>
  <p>Shanda Lear</p>
  <span class="secret">youwontguessthisone</span>
  <p>Chris P. Bacon</p>
  <span class="secret">supersecret</span>
  <button onclick="showSecrets(this)">HIDE SECRETS</button>
  <h2>List two items</h2>
  <p>Chip Monk</p>
  <span class="secret">icanneverremember</span>
  <p>Rick Shaw</p>
  <span class="secret">helloworld</span>
  <p>Warren Peace</p>
  <span class="secret">12341234</span>
  <button onclick="redactSecrets(this)">HIDE SECRETS</button>


                .secret {
  background-color: black;
button {
  display: block;
  margin-top: 1em;


                // the parameter buttonElement is the actual button node or element
// it is passed into the function using the "this" keyword
function showSecrets(buttonElement) {
  // Get the parent node / element of the button
  let buttonParent = buttonElement.parentNode;
  // Now our secretElements only contains 
  // the children of the button's parent div
  let secretElements = buttonParent.getElementsByClassName('secret');
  for (let element of secretElements) { "transparent";