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

Jarrett Young
Jarrett Young
12,635 Points
Posted by Jarrett Young
Jarrett Young
12,635 Points

stuck on this code challenge, kinda lost

I'm stuck on this code challenge because I'm not understanding what's being asked of me. Anyone out there who can clarify?

Challenge: 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.

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.onchange = navigateToValue.addEventListener();
navigationSelect.onchange = sendAnalytics.addEventListener();
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>
Jarrett Young
Jarrett Young
12,635 Points
Jarrett Young
Jarrett Young
12,635 Points

never mind, finally figured it out!!

1 Answer

MUZ140877 Nokuthula Mahlangu
MUZ140877 Nokuthula Mahlangu
6,149 Points
MUZ140877 Nokuthula Mahlangu
MUZ140877 Nokuthula Mahlangu
6,149 Points

how did you figure it out??? m still lost

Juliette Tworsey
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Juliette Tworsey
Front End Web Development Techdegree Graduate 32,425 Points
Juliette Tworsey
.a{fill-rule:evenodd;}techdegree seal-36
Juliette Tworsey
Front End Web Development Techdegree Graduate 32,425 Points

For anyone who may be stuck on this challenge, first we need to add two event listeners that each carry two parameters, one signifying that there is going to be a change when the event handler(s) is called and another that adds the task(s) that needs to be undertaken:

//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);