我基本上试图编写一个非常基本的程序,它将像这样工作：
Enter your name: _ Enter your age: _ Your name is <name> and your age is <age>.
我一直试图弄清楚如何在Node中做这样的事情而不使用提示npm模块.
我的尝试是：
import readline from 'readline'
const rl = readline.createInterface({
input: process.stdin,output: process.stdout
})
rl.question('What is your name? ',(name) => {
rl.question('What is your age? ',(age) => {
console.log(`Your name is ${name} and your age is ${age}`)
})
})
然而,这种嵌套的方式看起来很奇怪,无论如何我可以做到这一点,而不是像这样嵌套,以获得正确的顺序？
解决方法
zangw的答案就足够了,但我想我可以说清楚一点：
import readline from 'readline'
const rl = readline.createInterface({
input: process.stdin,output: process.stdout
})
function askName() {
return new Promise((resolve) => {
rl.question('What is your name? ',(name) => { resolve(name) })
})
}
function askAge(name) {
return new Promise((resolve) => {
rl.question('What is your age? ',(age) => { resolve([name,age]) })
})
}
function outputEverything([name,age]) {
console.log(`Your name is ${name} and your age is ${age}`)
}
askName().then(askAge).then(outputEverything)
如果你不关心它,那么顺序问两个问题,你可以这样做：
//the other two stay the same,but we don't need the name or the arrays Now
function askAge() {
return new Promise((resolve) => {
rl.question('What is your age? ',(age) => { resolve(age) })
})
}
Promise.all([askName,askAge]).then(outputEverything)