|
@@ -0,0 +1,44 @@
|
|
|
+<!DOCTYPE html>
|
|
|
+<html lang="en">
|
|
|
+<head>
|
|
|
+ <meta charset="UTF-8">
|
|
|
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
|
+ <title>Document</title>
|
|
|
+ <style>
|
|
|
+ #can{
|
|
|
+ background-color: #000;
|
|
|
+ }
|
|
|
+ </style>
|
|
|
+</head>
|
|
|
+<body>
|
|
|
+ <canvas id="can" width="500" height="500"></canvas>
|
|
|
+ <script>
|
|
|
+ // 获取画布
|
|
|
+ var oCan = document.getElementById("can");
|
|
|
+ // 初始化画布
|
|
|
+ var oCtx = oCan.getContext("2d");
|
|
|
+
|
|
|
+ // 设置画笔样式
|
|
|
+ oCtx.lineWidth = 3;
|
|
|
+ oCtx.strokeStyle = '#fff';
|
|
|
+
|
|
|
+ // 绑定事件
|
|
|
+ oCan.onmousedown = function(e){
|
|
|
+ // 落笔
|
|
|
+ oCtx.moveTo(e.clientX,e.clientY);
|
|
|
+ // 移动事件
|
|
|
+ oCan.onmousemove = function(e){
|
|
|
+ // 移动画笔
|
|
|
+ oCtx.lineTo(e.clientX,e.clientY);
|
|
|
+ // 绘制
|
|
|
+ oCtx.stroke();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // 鼠标抬起
|
|
|
+ oCan.onmouseup = function(){
|
|
|
+ // 停止绘画
|
|
|
+ oCan.onmousemove = null;
|
|
|
+ }
|
|
|
+ </script>
|
|
|
+</body>
|
|
|
+</html>
|