全程50min拷打项目实习项目Vue响应式原理Vue父子组件的生命周期手撕:实现Vue的Event类,实现它的on、emit、once、off接口事件循环代码输出题: async function async1() { console.log('async1 start') await async2() console.log('async end') } async function async2() { console.log('async2') } console.log('script start') async1() setTimeout(() => {console.log...