关于es6:image图片复制

咱们可能在某些场景中须要复制图片当不须要用户本人右键操作复制的时候，咱们能够应用 clipboard 来实现（不过 clipboard 的兼容性不是很敌对）以下为代码
HTML:
<div class="imgBox"></div>

 let imgBox = document.querySelector('.imgBox');
    let img = new Image();
    img.crossOrigin = "anonymous";
    img.src = 'https://dummyimage.com/300.png'
    let canvas = document.createElement('canvas');
    img.onload = function() {
      canvas.width = img.width;
      canvas.height = img.height;
      let context = canvas.getContext('2d');
      context.drawImage(img, 0, 0);
      imgBox.appendChild(canvas)
      canvas.toBlob(function(blob) {if (window.ClipboardItem) {
          navigator.clipboard.write([new ClipboardItem({ [blob.type]: blob })
          ]);
        } else {// 浏览器不反对}

      }, 'image/png');
    }