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

Posted by Pawel Ellwart
Pawel Ellwart
12,993 Points

In the listener that has been added to the section element, ensure that the text input elements are the only children

I can't solve this task, it seems that I'm selecting the right tag "input" but it doesn't work. The goal is to is to ensure that the text input elements are the only children that trigger the background-changing behavior.

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) => {
  if (e.target.tagName == 'input') {
  e.target.style.backgroundColor = 'rgb(255, 255, 0)'; }
});

2 Answers

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

You're really close! But tag names are always stored in UPPER CASE.

See the MDN documentation page for more details.

Pawel Ellwart
Pawel Ellwart
12,993 Points
Pawel Ellwart
Pawel Ellwart
12,993 Points

Thank you Steven for explanation! It works , I also read MDN.