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<html>
<head>
<meta charset="utf-8">
<title>W3Cschool教程(w3cschool.cn)</title>
</head>
<body>
<canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;">
您的浏览器不支持 HTML5 canvas 标签。
</canvas>
<p>试图设置miterLimit 4(然后,斜接长度将超过斜接限制),当行满足它将显示为lineJoin =“bevel”。</p>
<script>
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.lineWidth=10;
ctx.lineJoin="miter";
ctx.miterLimit=5;
ctx.moveTo(20,20);
ctx.lineTo(50,27);
ctx.lineTo(20,34);
ctx.stroke();
</script>
</body>
</html>