master

分支 (1)

管理

管理

master

fabricjs-demo
/
tutorial
/
Canvas
/
getElement.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>getElement 返回与此实例对应的画布元素</title>
</head>
<body>
  <button onclick="getElement()">返回与此实例对应的画布元素</button>
  <canvas id="canvasBox" width="600" height="600" style="border: 1px solid #ccc;"></canvas>

  <script src="../../script/fabric.js"></script>
  <script>

    let canvas = new fabric.Canvas('canvasBox')

    // 三角形
    const triangle = new fabric.Triangle({
      top: 100,
      left: 50,
      width: 80, // 底边宽度
      height: 100, // 底边到定点的距离
      fill: 'blue',
    })

    // 矩形
    const rect = new fabric.Rect({
      width: 60,
      height: 60,
      top: 100,
      left: 200,
      fill: 'pink'
    })

    // 圆形
    const circle = new fabric.Circle({
      radius: 40,
      top: 300,
      left: 50,
      fill: 'yellowgreen'
    })

    canvas.add(triangle, rect, circle)


    // 返回与此实例对应的画布元素
    function getElement() {
      let el = canvas.getElement()
      console.log(el)

      // getElement 可以配合 dispose 一起使用
      canvas.dispose()
      el.remove()
    }

  </script>
</body>
</html>