<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Canvas</title>
</head>
<body>
<canvas id="canvas" style="border: 1px solid #aaa;display: block;margin: 50px auto;">
</canvas>
<script>
window.onload = function () {
var canvas = document.getElementById("canvas");
canvas.width = 1024;
canvas.height = 768;
// 使用canvas绘制
if (canvas.getContext('2d')) {
var context = canvas.getContext('2d');
// 画线
context.moveTo(100,100);
context.lineTo(700,700);
context.stroke();
} else {
alert("当前浏览器不支持canvas");
}
}
</script>
</body>
</html>
这样就能画出线了。