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前端页面中使用 ppt 功能，并且可以随意插入关键帧

news 2025/7/8 17:59:18

要在前端页面中实现类似 PowerPoint 的功能，并且能够随意插入和控制关键帧动画，你可以使用 HTML、CSS 和 JavaScript 结合的方式来创建一个互动幻灯片系统。以下是一个详细的实现方案，包括如何插入和控制关键帧动画：

1. 基础 HTML 和 CSS 结构

首先，创建一个基本的 HTML 页面结构，用于展示幻灯片和按钮。

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Interactive Presentation with Keyframes</title><link rel="stylesheet" href="styles.css">
</head>
<body><div class="presentation"><div class="slide" id="slide1"><h1>Slide 1</h1><p>This is the content for slide 1.</p></div><div class="slide" id="slide2"><h1>Slide 2</h1><p>This is the content for slide 2.</p></div><!-- Add more slides as needed --></div><button onclick="prevSlide()">Previous</button><button onclick="nextSlide()">Next</button><script src="script.js"></script>
</body>
</html>

/* styles.css */
body {font-family: Arial, sans-serif;display: flex;flex-direction: column;align-items: center;justify-content: center;height: 100vh;margin: 0;
}.presentation {width: 80%;height: 60%;position: relative;overflow: hidden;
}.slide {display: none;width: 100%;height: 100%;position: absolute;top: 0;left: 0;background: #f0f0f0;padding: 20px;box-sizing: border-box;transition: opacity 1s ease-in-out;
}.slide.active {display: block;
}

2. JavaScript 实现幻灯片切换和关键帧动画

通过 JavaScript 实现幻灯片的切换，并插入和控制关键帧动画。

// script.js
let currentSlide = 0;
const slides = document.querySelectorAll('.slide');function showSlide(index) {slides.forEach((slide, i) => {slide.classList.toggle('active', i === index);});
}function nextSlide() {currentSlide = (currentSlide + 1) % slides.length;showSlide(currentSlide);
}function prevSlide() {currentSlide = (currentSlide - 1 + slides.length) % slides.length;showSlide(currentSlide);
}// Initialize the first slide
showSlide(currentSlide);// Function to dynamically add keyframe animation
function addKeyframeAnimation(element, animationName, keyframes) {const styleSheet = document.createElement('style');styleSheet.type = 'text/css';const keyframesCSS = `@keyframes ${animationName} {${keyframes}}`;styleSheet.innerText = keyframesCSS;document.head.appendChild(styleSheet);element.style.animation = `${animationName} 2s ease-in-out`;
}// Example usage: Add an animation to a specific slide
const slide1 = document.getElementById('slide1');
addKeyframeAnimation(slide1, 'fadeIn', '0% { opacity: 0; } 100% { opacity: 1; }');const slide2 = document.getElementById('slide2');
addKeyframeAnimation(slide2, 'zoomIn', '0% { transform: scale(0.5); opacity: 0; } 100% { transform: scale(1); opacity: 1; }');