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

Posted by Lukas Vavro
Lukas Vavro
7,211 Points

Where I need use "change"? Please.

I dont understand this exercise. Please help. Where I need use "change"? Thanks for answer

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("click",navigateToValue);
navigationSelect.addEventListener("click",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>

2 Answers

Grace Kelly
Grace Kelly
33,990 Points
Grace Kelly
Grace Kelly
33,990 Points

Hi Lukas, you're very close with your answer, except you need to use "change" and not "click" in your addEventListener, like so

navigationSelect.addEventListener('change', navigateToValue); //use "change"
navigationSelect.addEventListener('change', sendAnalytics); //use "change"

If you change these two lines your code should work, hope that helps!!

Lukas Vavro
Lukas Vavro
7,211 Points
Lukas Vavro
Lukas Vavro
7,211 Points

Thanks you :)