JavaScript JavaScript and the DOM Responding to User Interaction Event Delegation

Mirali Mirzayev
Mirali Mirzayev
1,980 Points

confused

I am kind of confused on this one guys please help!

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

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

1 Answer

Brendan Whiting
MOD
Brendan Whiting
Front End Web Development Treehouse Moderator 84,056 Points

Right now the code to set the background color of the element is going to run on any element in the section. But we want to restrict it to run only on input elements. So you can guard against that with if (e.target.tagName == "INPUT") {}