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

Posted by Tarun Roy
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Tarun Roy
Python Development Techdegree Student 235 Points

Cannot read property '1' of null

how to fix this i am wokring on Java script DOM

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

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

The instructions ask you to set listItems to refer to an HTMLCollection that "should contain all list items in the <ul> element." But this code is setting it to refer to the ul itself instead of the list items (li) inside it.