html5中往矩形中贴图片
分两步：
1. 画布大小就是矩形的大小
[html]
<body onload="drawrect();">
<canvas id="canvas" width="100" height="500">
aaa
</canvas>
</body>
2. 画到矩形上的代码
[html] www.2cto.com
<script>
var img_src = "./1.jpg";
function drawrect() {
var canvas = document.getelementbyid("canvas");
var context = canvas.getcontext("2d");
//context.strokerect(50, 50, 120, 120);
var img=new image();
//图像被装入后触发
img.onload=function(){
context.drawimage(img,0,0);
}
img.src=img_src;
}
</script>
全部代码：
[html]
<!doctype html>
<html>
<head>
<title>html5 canvas sample</title>
<script>
var img_src = "./1.jpg";
function drawrect() {
var canvas = document.getelementbyid("canvas");
var context = canvas.getcontext("2d");
//context.strokerect(50, 50, 120, 120);
var img=new image();
//图像被装入后触发
img.onload=function(){
context.drawimage(img,0,0);
}
img.src=img_src;
}
</script>
</head>
<body onload="drawrect();">
<canvas id="canvas" width="100" height="500">
aaa
</canvas>
<canvas id="canvas1" width="500" height="500">
bbb
</canvas>
</body>
</html>
作者：xiaocaiju
上一篇： 猕猴桃几月份成熟，又有哪些品种呢？
下一篇： python人脸识别windows版