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>
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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