generators(生成器)

generators(生成器)

生成迭代器：

    function* get(){
        let a = 1;
        a++;
        console.log(a);
        yield 'abc';
                
        let y = 2+a;
        console.log(y);
        yield 'hellow';
        console.log('dapang');
        yield '师徒教育';
        yield '欢迎你';
        yield '师徒课堂';
        console.log(123);
        yield '站在前方，为你导航';
    }
    let iter = get();
    console.log(iter.next());
    console.log(iter.next());
    console.log(iter.next());
    console.log(iter.next());
    console.log(iter.next());
    console.log(iter.next());
    console.log(iter.next());
    //依次打印：2
        Object {value: "abc", done: false}
        4
        Object {value: "hellow", done: false}
        dapang
        Object {value: "师徒教育", done: false}
        Object {value: "欢迎你", done: false}
        Object {value: "师徒课堂", done: false}
        123
        Object {value: "站在前方，为你导航", done: false}
        Object {value: undefined, done: true}
注释:1.生成器用来生成迭代器;
     2.function函数名字中间有一个*号.