生成器函数实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>生成器函数实例</title>
</head>
<body>
    <script>
        //1s 控制台输出111 2s后输出222 3s后输出 333  总共是6s
        function one(){
            setTimeout(() =>{
                console.log(111);
                iterator.next()

            },1000)
        }
        function two(){
            setTimeout(() =>{
                console.log(222);
                iterator.next()

            },2000)
        }
        function three(){
            setTimeout(() =>{
                console.log(333);

            },3000)
        }

        function * gen() {
            yield one();
            yield two();
            yield three();

        }

        //调用生成器函数
        let iterator = gen();
        iterator.next()
      

    </script>
</body>
</html>