ES6 Generator函数异步应用案例(一)

   //案例：使用Generator函数模拟抽奖的实现

        function choujiang() {
            console.log("执行抽奖业务逻辑")
        }

        let myGenerator = function* () {
            //控制抽奖次数
            let count = 3
            while (count > 0) {
                choujiang()
                count--

                yield

                if (count == 0) {
                    console.log("没有机会了")
                } else {
                    console.log(`剩余${count}次机会`)
                }
            }

        }

        let mygenerator = myGenerator()
        function onStart() {
            mygenerator.next()
        }