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JavaScript JavaScript and the DOM (Retiring) Getting a Handle on the DOM Selecting Multiple Elements

Posted by Unsubscribed User
Unsubscribed User
3,436 Points

Type Error

I'm trying to solve the challenge but I'm getting this error "TypeError: 'undefined' is not an object (evaluating 'listItems[i].style')". I'm not sure what I did wrong. Can you give me a hint?

index.html 
<!DOCTYPE html>
<html>
  <head>
    <title>Rainbow!</title>
  </head>
  <body>
    <ul id="rainbow">
      <li>This should be red</li>
      <li>This should be orange</li>
      <li>This should be yellow</li>
      <li>This should be green</li>
      <li>This should be blue</li>
      <li>This should be indigo</li>
      <li>This should be violet</li>
    </ul>
    <script src="js/app.js"></script>
  </body>
</html>
js/app.js 
let listItems = document.querySelectorAll('#rainbow');
const colors = ["#C2272D", "#F8931F", "#FFFF01", "#009245", "#0193D9", "#0C04ED", "#612F90"];

for(var i = 0; i < colors.length; i ++) {
  listItems[i].style.color = colors[i];    
}

2 Answers

Vladut Astalos
Vladut Astalos
11,246 Points
Vladut Astalos
Vladut Astalos
11,246 Points

I think the problem is that you select the ul element an you need to select li elements that are in that ul. Try to select "#rainbow > li".

Laura Leistad
seal-mask
.a{fill-rule:evenodd;}techdegree
Laura Leistad
Full Stack JavaScript Techdegree Student 6,063 Points
Laura Leistad
.a{fill-rule:evenodd;}techdegree
Laura Leistad
Full Stack JavaScript Techdegree Student 6,063 Points

I had the same problem, and that helped, however I don't recall that being in the videos prior to the code challenge, and thus far the code challenges have never use something not previously taught. Did I miss that in the videos?