js中promise的嵌套问题

Question

function s1() {    return new Promise(function(resolve, reject) {       console.log('函数s1执行')       s2()    })}function s2(){    return new Promise(function(resolve, reject) {        console.log('函数s2执行')        resolve()    })}s1().then(function(){    console.log('函数s1的then语句')})  这样只能执行s1和s2,s1后边的then语句怎样才能执行

Answer 1

s2()改成resolve(s2())