1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<script type="text/javascript">
<!--
function init() {
//1. 获取canvas元素
var cv = document.getElementById("cv");
//2. 获取2D上下文
var ctx = cv.getContext('2d');
//3. 新建一个Image对象
var img = new Image();
//4. 设置Image的src
img.src = "http://lorempixel.com/400/400/sports/";
//5. 确定Image加载完毕后将Image画到canvas上
img.onload = () => {
ctx.drawImage(img, 0, 0, 400, 400);
}
}
//-->
</script>
<title>Document</title>
</head>
<body onload="init()">
<canvas id="cv" width="600" height="600"></canvas>
</body>
</html>
|
