Modern Web Animations

1. Introduction

Modern web animations enhance user experience by making interfaces more engaging and interactive. This lesson covers important concepts, types of animations, and how to implement them effectively.

2. Key Concepts

3. CSS Animations

CSS animations are a straightforward way to add animations without scripting. They can be achieved using transitions and keyframes.

3.1 CSS Transitions

Transitions allow you to change property values smoothly (over a given duration) from one state to another.

button {
    background-color: blue;
    transition: background-color 0.5s ease;
}

button:hover {
    background-color: green;
}
            

3.2 CSS Keyframe Animations

Keyframes control the intermediate steps in a CSS animation sequence, allowing for more complex animations.

@keyframes example {
    0% { background-color: red; }
    50% { background-color: yellow; }
    100% { background-color: red; }
}

.box {
    width: 100px;
    height: 100px;
    animation: example 5s infinite;
}
            

4. JavaScript Animations

JavaScript animations provide more control and flexibility. Libraries like GSAP and Anime.js can simplify complex animations.

4.1 Example Using JavaScript

const box = document.querySelector('.box');

box.addEventListener('click', () => {
    box.style.transition = 'transform 0.5s';
    box.style.transform = 'scale(1.5)';
});
            

5. Best Practices

To ensure smooth and effective animations, consider these best practices:

• Use CSS animations for simple effects.
• Minimize the use of JavaScript for performance.
• Test animations on multiple devices.
• Ensure animations are not disruptive to users.

6. FAQ