canvas ellipse兼容性
时间: 2023-12-05 10:39:59 浏览: 25
canvas的ellipse方法在一些浏览器中并不被支持,但可以通过引入Google出品的canvas-5-polyfill.js来增强canvas兼容性并添加ellipse方法。同时,由于IE不支持canvas,我们可以使用excanvas.js来解决IE的兼容问题。
以下是使用canvas-5-polyfill.js实现canvas ellipse方法的示例代码:
```html
<!DOCTYPE html>
<html>
<head>
<title>Canvas Ellipse Demo</title>
<script src="https://cdn.bootcdn.net/ajax/libs/excanvas/3.0.0/excanvas.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/canvas-5-polyfill/1.0.3/canvas-5-polyfill.min.js"></script>
</head>
<body>
<canvas id="myCanvas" width="200" height="100"></canvas>
<script>
var canvas = document.getElementById("myCanvas");
var ctx = canvas.getContext("2d");
ctx.beginPath();
ctx.ellipse(100, 50, 50, 30, 0, 0, 2 * Math.PI);
ctx.stroke();
</script>
</body>
</html>
```