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

Matt Gaboury
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Matt Gaboury
Full Stack JavaScript Techdegree Student 1,540 Points
Posted by Matt Gaboury
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Matt Gaboury
Full Stack JavaScript Techdegree Student 1,540 Points

querySelectorALL?

Do they want me to use the querySelectorALL command or maybe the getElementsByTagName?

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;
const colors = ["#C2272D", "#F8931F", "#FFFF01", "#009245", "#0193D9", "#0C04ED", "#612F90"];

for(var i = 0; i < colors.length; i ++) {
  listItems[i].style.color = colors[i];    
}
Basilissa Albers
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Basilissa Albers
Full Stack JavaScript Techdegree Graduate 23,755 Points
Basilissa Albers
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Basilissa Albers
Full Stack JavaScript Techdegree Graduate 23,755 Points

I guess that you can use whatever method you like, as long as you assign a collection of all li tags of the list to the variable listItems. So both querySelectorALL and getElementsByTagName should work if you use them correctly.

1 Answer

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

Like many things in programming, there's more than one way to handle this task. Any valid solution will pass the challenge.

Using querySelectorALL is certainly one way, and perhaps the most concise approach. But it can also be solved using one or two of the more fundamental selection methods combined with properties or chained together.