<\/div>\n <\/body>\n<\/html><\/pre>
Method 2: Use html5 canvas to implement gif images; <\/strong><\/p>Use canvas's drawImage to load images containing frames into canvas, and then combine them with js to implement animation. See demo: <\/p>
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<span>How to add image animation effects in html5</span>
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<h1 class="Articlelist_txts_title">How to add image animation effects in html5</h1>
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<span id="377j5v51b" class="Articlelist_txts_time">Mar 04, 2021 pm 03:35 PM</span>
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<span id="377j5v51b" class="Articlelist_txts_infoss on">html5</span>
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<blockquote><p>How to add image animation effects in html5: 1. Use the steps of css3 animation to implement spirit animation; 2. Use html5 canvas to implement gif images. </p></blockquote>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/052/60408d923567a915.jpg" class="lazy" alt="How to add image animation effects in html5" ></p>
<p>The operating environment of this tutorial: windows7 system, html5&&css3 version, DELL G3 computer. </p>
<p><strong>html5 Method to add image animation effects: </strong></p>
<p><strong>Method 1: Use the steps of css3 animation to implement spirit sprite animation; </strong></p>
<p>When applying CSS3 gradient/animation, there is an attribute that controls the time<code><timing-function></code>. In addition to the commonly used cubic Bezier curve, there is also a confusing <code>steps()</code> function. </p>
<p><code>steps()</code> The first parameter number is the specified interval number (must be a positive integer), that is, the animation is divided into n steps for staged display. The second parameter defaults to end. Set the status of the last step, start is the status at the end, and end is the status at the beginning. </p>
<p>With this steps(), we can implement the common sprite animation in the web. See demo: </p><pre class='brush:php;toolbar:false;'><!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title></title>
<link rel="stylesheet" href="">
<style>
.bird{background: url(bird.png);width: 140px;height:85px;animation: bird 2s steps(8) infinite; }
@keyframes bird{
from {
background-position: 0 0;
}
to {
background-position: -800% 0px;
}
}
</style>
</head>
<body>
<div></div>
</body>
</html></pre><p><strong>Method 2: Use html5 canvas to implement gif images; </strong></p><p>Use canvas's drawImage to load images containing frames into canvas, and then combine them with js to implement animation. See demo: </p><pre class='brush:php;toolbar:false;'><!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>canvas幀--實(shí)現(xiàn)動(dòng)畫</title>
<style>
*{padding:0;margin:0;}
canvas{display:block;background:white}
</style>
</head>
<body>
<canvas></canvas>
<script>
var imgPic = new Image();
imgPic.src = 'http://www.cj365.cc/demo/bird/bird.png';
var canvas = document.querySelector('canvas');
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
var ctx = canvas.getContext('2d');
imgPic.onload = function () {
drawImg()
}
var i = 0;
var lastTime = new Date().getTime();
var delatime;
var timer = 0;
function drawImg() {
window.requestAnimationFrame(drawImg);
var now = new Date().getTime();
delatime = now - lastTime;
lastTime = now;
timer += delatime;
if (timer > 200) {
i++;
if (i > 7) i = 0;
timer = 0
}
console.log(delatime)
ctx.drawImage(imgPic, i * 140, 0, 140, 85, (canvas.width - 140) / 2, (canvas.height - 85) / 2, 140, 85);
}
</script>
</body>
</html></pre><blockquote><p>Related learning recommendations: <a href="http://www.miracleart.cn/course/list/11.html" target="_blank"> html video tutorial</a></p></blockquote><p>The above is the detailed content of How to add image animation effects in html5. For more information, please follow other related articles on the PHP Chinese website!</p>
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<p class="Articlelist_txts_p">MSE (MediaSourceExtensions) is part of the W3C standard, allowing JavaScript to dynamically build media streams, thus enabling advanced video playback capabilities. It manages media sources through MediaSource, stores data from SourceBuffer, and represents the buffering time range through TimeRanges, allowing the browser to dynamically load and decode video clips. The process of using MSE includes: ① Create a MediaSource instance; ② Bind it to an element; ③ Add SourceBuffer to receive data in a specific format; ④ Get segmented data through fetch() and append it to the buffer. Common precautions include: ① Format compatibility issues; ② Time stamp pair</p>
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