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JavaScript jQuery Basics Introducing jQuery jQuery Syntax and Animation Effects

can someone help me with this

Convert the plain JavaScript code in the app.js file to jQuery. Assume the selected element has a class of profile-header, and use the jQuery method .hide().

index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Document</title>
</head>
<body>
    <h1 class="profile-header">Student <span>Profile</span></h1>

    <script
    src="jquery-3.2.1.min.js"></script>
    <script src="app.js"></script>
</body>
</html>
app.js
$('.profile-header').click(function(){
    $("").hide();
});

5 Answers

Kieran Barker
Kieran Barker
15,028 Points

This is all you need to do :-)

$('.profile-header').hide();
Harvey Bracken-Smith
PLUS
Harvey Bracken-Smith
Courses Plus Student 4,243 Points

This is the answer to both parts

$(".profile-header").hide().delay(2000).fadeIn();

thanks so much

Can someone explain why we have the $ in the javascript and jQuery above? I'm lost.

Kieran Barker
Kieran Barker
15,028 Points

This is how you select elements with jQuery.

These:

  • jQuery('.profile-header');
  • $('.profile-header');

Are the similar to these in vanilla JavaScript:

  • document.querySelectorAll('.profile-header');
  • document.getElementsByClassName('profile-header');

Ahh it's like a shortcut. Thank you!