update

src/random/png.ts

@@ -0,0 +1,16 @@
+// 数字图片，然后base64的图片
+export const randomPng = (content: number | string = 1) =>{ 
+  const canvas = document.createElement('canvas');
+  const ctx = canvas.getContext('2d')!;
+  const size = 128;
+  canvas.width = size;
+  canvas.height = size;
+  ctx.fillStyle = '#'+Math.floor(Math.random()*16777215).toString(16);
+  ctx.fillRect(0, 0, size, size);
+  ctx.font = 'bold 32px Arial';
+  ctx.fillStyle = '#ffffff';
+  ctx.textAlign = 'center';
+  ctx.textBaseline = 'middle';
+  ctx.fillText(content.toString(), size / 2, size / 2);
+  return canvas.toDataURL();
+}