SOURCE

function run(gen) {
    const g = gen()

    function next(data) {
        const result = g.next(data);
        if (result.done) return result.value;
        result.value.then(res => {
            next(res)
        })
    }

    next()
}

function* gen() {
    const response1 = yield fetch('http://localhost:10003/api/sys_user/login', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ name: '1', password: '1' })
    })
    const json1 = yield response1.json();
    console.log(json1)

    const response2 = yield fetch('http://localhost:10003/api/sys_user/login', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ name: 'yqkj', password: '123456' })
    })
    const json2 = yield response2.json();
    console.log(json2)
}

function* gen2() {
    const a = yield new Promise(resolve => {
        setTimeout(() => {
            resolve('1')
        }, 1000)
    })
    console.log(a)
    const b = yield new Promise(resolve => {
        setTimeout(() => {
            resolve('2')
        }, 1000)
    })
    console.log(b)
}

// run(gen2)
// run(gen)