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

daniel wilson
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daniel wilson
Front End Web Development Techdegree Graduate 13,875 Points

Currently, the event listener applies a yellow background color to the section element and its child elements when click

Currently, the event listener applies a yellow background color to the section element and its child elements when clicked. Add a condition that changes the background of the <input> elements only.

no clue :(

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

section.addEventListener('click', (e) => {
  if (event.target.tagName == 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>

1 Answer

Steven Parker
Steven Parker
210,863 Points

The tag name test should compare with the literal string "INPUT". You won't need to create another variable.

Literal strings need to be enclosed in quotes, and tag name are always stored in upper case.

Jelena Feliciano
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Jelena Feliciano
Full Stack JavaScript Techdegree Student 12,716 Points

wow. the video made it seem like we only need to keep them uppercase if we wanted them to appear uppercased. Thanks for that clarification