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

Abua KC
Abua KC
5,932 Points
Posted by Abua KC
Abua KC
5,932 Points

Javascript and the DOM

It keeps saying make sure you are making the right selection

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 == "li") {
  e.target.style.backgroundColor = 'rgb(255, 255, 0)';
  }
});

3 Answers

torbenewert2
torbenewert2
220 Points

You have to select the Input-Elements.

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

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

Please note, that INPUT has to be all caps.

Abua KC
Abua KC
5,932 Points
Abua KC
Abua KC
5,932 Points

Thanks . I actually tried using "input", small caps and wouldnt work. Thanks again

Reza Sorasti
Reza Sorasti
491 Points
Reza Sorasti
Reza Sorasti
491 Points

What are the "let" and "(e)=>" keywords? And what is event listener? Which JavaScript course in the treehouse goes over these things? I already have gone over the first two JavaScript courses in the treehouse and none of those courses have gone over these concepts.