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

Oleksandra Smith
Oleksandra Smith
Front End Web Development Techdegree Student 9,361 Points

Loop question

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.

// Complete the challenge by writing JavaScript below
const colors = ["#C2272D", "#F8931F", "#FFFF01", "#009245", "#0193D9", "#0C04ED", "#612F90"];
let list = document.querySelectorAll ('li');

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

1 Answer

Jason Larson
Jason Larson
7,734 Points

There are 2 issues with your code. The first is that you changed let listItems; to let list = ..., so the second part of the script won't work because the variable name is wrong.

Having said that, your code would work in real-life, but the challenge specifically asks you to return an HTMLCollection, and querySelectorAll() returns a NodeList. You need to use getElementsByTagName():

let listItems = document.getElementsByTagName('li');