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

Jatinderjit Singh
Jatinderjit Singh
1,047 Points
Posted by Jatinderjit Singh
Jatinderjit Singh
1,047 Points

event delegation

event.tagName Returns Element Name , i.e. input

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.querySelector('section');

section.addEventListener('click' , (e) => {
if(e.tagName == "INPUT"){

e.tagName.style.backgroundColor = "red";
}
});
Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points
Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points

What is your problem and what do you expect to happen?

1 Answer

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

I see two issues:

  • you wrote "e.tagName" instead of "e.target.tagName"
  • don't change the original line that applies the color, just add your conditional around it