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JavaScript JavaScript and the DOM Getting a Handle on the DOM Select by Tag Name

Posted by Caleb Newell
Caleb Newell
12,562 Points

Setting variable listItems to refer to an HTMLCollection

The for loop in app.js cycles over list items and applies a color to each item using the values stored in the colors array. For example, it applies the first color in the array ( #C2272D) to the first list item, the second color (#F8931F) to the second list item, and so on.

Complete the code by setting the variable listItems to refer to an HTMLCollection. The collection should contain all list items in the <ul> element.

I am a little stuck on this code challenge. Can I someone give me a hint?

app.js 
// Complete the challenge by writing JavaScript below
const colors = ["#C2272D", "#F8931F", "#FFFF01", "#009245", "#0193D9", "#0C04ED", "#612F90"];
let listItems;

for ( let i = 0; i < colors.length; i++ ) {
  listItems[i].style.color = colors[i];    
}
index.html 
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>JavaScript and the DOM</title>
  </head>
  <body>
    <h1>My List</h1>
    <ul>
      <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="app.js"></script>
  </body>
</html>

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

You'll need a selector function, and since you want it to return an HTMLCollection, either document.getElementsByTagName() or document.querySelectorAll() would be good choices.