Canvas

canvas

<canvas>元素可被用来通过 JS 绘制图形动画

使用

  1. canvas 标签 (自带宽高属性)

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    <canvas id='canvas' width:"100" height:"100"></canvas>
  2. JS

    创建 canvas 画布

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    let canvas = document.getElementById('canvas');
    let ctx = canvas.getContext('2d');
  3. 常用属性

  • 绘制矩形:

    • 填充:fillRect(x,y,width,height)
    • 边框:strokeRect
    • 清除指定矩形区域 clearRect(x, y, width, height)