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.zzzyk.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

补充：web前端 , HTML 5 ,