函数 addReadyCallback

addReadyCallback(callback: () => void | Promise<void>): void
参数
- callback: () => void | Promise<void>
  The callback function.
返回 void
En
After the main package is loaded, this callback will be executed. All registered callbacks are executed in parallel.

Zh
当主包加载完成后，会执行这个回调。所有注册的回调是并行执行。
- 定义于 src/layaAir/Laya.ts:388