Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript and the DOM Making Changes to the DOM Modifying Elements

Nima Sakha
seal-mask
.a{fill-rule:evenodd;}techdegree
Nima Sakha
Front End Web Development Techdegree Student 10,645 Points

How do I select the element and change it

I am not sure how to get the p element and change its value to the inputValue var

app.js
var inputValue = document.getElementById('linkText').value;
const info = document.getElementsByClassName('.info');
info.textContent = inputValue;
index.html
<!DOCTYPE html>
<html>
    <head>
      <title>DOM Manipulation</title>
    </head>
    <link rel="stylesheet" href="style.css" />
    <body>
      <div id="content">
        <label for="linkText">Link Text:</label>
        <input type="text" id="linkText" value="sample text">
        <p class="info"></p>
      </div>
    <script src="app.js"></script>
  </body>
</html>

1 Answer

Steven Parker
Steven Parker
231,198 Points

When you use getElementsByClassName, the argument is just the class name (no period). You may have been thinking of using querySelector.

Also, that function returns an element collection instead of a single element, so you'd need to use indexing to select the first element of the collection: info[0].textContent = inputValue;