canvas

star较多的两个canvas封装库

• pixijs

• fabric.js

• 编写 canvas 标签（注意指定宽高）<canvas id="k" width="500" height="500"></canvas>

• 获取 canvas DOM 对象 let canvas = document.getElementById("k")

• 获取 Canvas 对象 let context = canvas.getContext("2d")

• 设置绘图属性 beginPath => 绘制 => (closePath + style)

• 调用绘图 API fillStyle=>fill() strokeStyle=>stroke()