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JavaScript Interactive Web Pages with JavaScript Traversing and Manipulating the DOM with JavaScript Adding Multiple Event Listeners

Alec Gillanders
Alec Gillanders
19,548 Points

Why does this code not work? the community states it does??

We've got a select box that's used to navigate to a new page on the "change" event and record some analytics. We want two event handlers to fire, fix lines 14 and 15 so that both of the handlers trigger on "change" rather than just the last function assigned to onchange.

My code:

navigationSelect.addEventListener("change", navigateToValue); navigationSelect.addEventListener("change", sendAnalytics);

app.js
//Select select box
var navigationSelect = document.getElementById("nav");

//Navigate to URL when select box is changed
var navigateToValue = function() {
  window.location = this.value;
}

//Send analytics data
var sendAnalytics = function() {
  //Placeholder  
}

navigationSelect.addEventListner("change", navigateToValue);
navigationSelect.addEventListner("change", sendAnalytics);
index.html
<!DOCTYPE html>
<html>
  <body>
    <select id="nav">
      <option value="index.html">Home</option>
      <option value="about.html">About</option>
    </select>
    <h1>Home</h1>
    <script src="app.js"></script>
  </body>
</html>
about.html
<!DOCTYPE html>
<html>
  <body>
    <select id="nav">
      <option value="index.html">Home</option>
      <option value="about.html">About</option>
    </select>
    <h1>About</h1>
    <script src="app.js"></script>
  </body>
</html>

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

It would work, but you've managed to misspell "Listener". You've typed "Listner" in both rows. Try cleaning up the spelling, then try again. Here's what you need:

navigationSelect.addEventListener("change", navigateToValue);
navigationSelect.addEventListener("change", sendAnalytics);