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

Jacob Horn
Jacob Horn
9,255 Points

You haven't added any `'change'` event handlers with the `addEventListener()` method.

Do I have a syntax error or am I missing a line of code before my eventlistenrs?

Thanks for the help!

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

Steven Parker
Steven Parker
231,236 Points

:point_right: You have a syntax error. There's a stray equal sign (=) between the addEventListener call and its arguments (on both lines).