Canvas draws pictures

Drawing pictures with Canvas should be one of its features or highlights. Of course, with the File API, JS becomes unrivaled. Next, I will show you how to draw a picture and create a three-dimensional effect.

The code is as follows:

<!DOCTYPE html>
<html>
<head> 
    <meta charset="utf-8"> 
    <title>php中文网</title> 
</head>
<body>
<p>Image to use:</p>
<img id="scream" src="http://img2.imgtn.bdimg.com/it/u=1901619824,975274476&fm=21&gp=0.jpg" alt="The Scream" width="220" height="277"><p>Canvas:</p>
<canvas id="myCanvas" width="250" height="300" style="border:1px solid #d3d3d3;">
    您的浏览器不支持 HTML5 canvas 标签。</canvas>
<script>
    var c=document.getElementById("myCanvas");
    var ctx=c.getContext("2d");
    var img=document.getElementById("scream");
    img.onload = function() {
        ctx.drawImage(img,10,10);
    }
</script>
</body>
</html>

Continuing Learning

new file

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>php中文网</title> </head> <body> <p>Image to use:</p> <img id="scream" src="http://img2.imgtn.bdimg.com/it/u=1901619824,975274476&fm=21&gp=0.jpg" alt="The Scream" width="220" height="277"><p>Canvas:</p> <canvas id="myCanvas" width="250" height="300" style="border:1px solid #d3d3d3;"> 您的浏览器不支持 HTML5 canvas 标签。</canvas> <script> var c=document.getElementById("myCanvas"); var ctx=c.getContext("2d"); var img=document.getElementById("scream"); img.onload = function() { ctx.drawImage(img,10,10); } </script> </body> </html>

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Automatic operation

Canvas draws pictures

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