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

The for loop cycles over list items and applies a color to each item using the values stored in the colors array. For ex

Anyone can help me out kind of confused on this one?

js/app.js
var listItems;
var colors = ["#C2272D", "#F8931F", "#FFFF01", "#009245", "#0193D9", "#0C04ED", "#612F90"];

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

The for loop cycles over list items and applies a color to each item using the values stored in the colors array. For example, the first color in the array ( #C2272D) is applied 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 a collection. The collection should contain all list items in the <ul> element with the ID of rainbow.

Here is the full question sorry it got cut off.

3 Answers

Reggie Williams
STAFF
Reggie Williams
Treehouse Teacher

Hey Antonio Gonzalez you'll need to use DOM Selection from this unit to select all of the list items and store them in the list item variable

Joe Mbome
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Joe Mbome
Front End Web Development Techdegree Graduate 17,250 Points

hello Antonio you should try this;

var listItems=document.querySelectorAll('li'); var colors = ["#C2272D", "#F8931F", "#FFFF01", "#009245", "#0193D9", "#0C04ED", "#612F90"];

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

Kathryn Kassapides
Kathryn Kassapides
9,260 Points

why doesn't this work: const rainbow = document.getElementsById ('li');

Reggie Williams
Reggie Williams
Treehouse Teacher

Kathryn Kassapides you are correctly selecting the elements but that variable should be named list items