Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction Event Delegation

Not sure why this code isn't working.

I can't seem to figure out why the input element isn't being targeted properly.

app.js
let section = document.getElementsByTagName('section')[0];

section.addEventListener('click', (e) => {
  if (event.target.targetName = 'INPUT') {
      e.target.style.backgroundColor = 'rgb(255, 255, 0)';
  }
});
index.html
<!DOCTYPE html>
<html>
    <head>
        <title>JavaScript and the DOM</title>
    </head>
    <link rel="stylesheet" href="style.css" />
    <body>
        <section>
            <h1>Making a Webpage Interactive</h1>
            <p>JavaScript is an exciting language that you can use to power web servers, create desktop programs, and even control robots. But JavaScript got its start in the browser way back in 1995.</p>
            <hr>
            <p>Things to Learn</p>
            <ul>
                <li>Item One: <input type="text"></li>
                <li>Item Two: <input type="text"></li>
                <li>Item Three: <input type="text"></li>
                <li>Item Four: <input type="text"></li>
            </ul>
            <button>Save</button>
        </section>
        <script src="app.js"></script>
    </body>
</html>

2 Answers

Some hints:

  • The property you are looking for is tagName
  • You are using an assignment operator in your if condition. To make a comparison use ==.

Hey Sarah good job on writing your if statement. So there are a couple of minor details that need changing to pass the challenge.

if (event.target.targetName = 'INPUT') {

So starting off it seems as though there might be a small mistake as to the property you were trying to access from the event.target looks as though you might have meant tagName instead of targetName.

If you do a console.dir(event.target) and open your Chrome Dev Tools you'll be able to see what properties are accessible from event.target.

Secondly, keep in mind the = will try and assign a value rather than check a value. With that being said you'll want to use the === to check if the event.target.tagName is equal to INPUT like so

section.addEventListener('click', (e) => {
  if (e.target.tagName === 'INPUT') {
  e.target.style.backgroundColor = 'rgb(255, 255, 0)';
  }
});