询问用户

与用户交流！💬

console.log('Let us ask for a number! 💬')

什么是输入？📥

console.log('Input is what YOU type in!')

模拟输入 🎭

let userTemp = 25
console.log('The user typed:', userTemp)

使用输入 🔧

let userTemp = 25
let result = userTemp * 9 / 5 + 32
console.log('That is', result, 'F')

数字与文本 🔢

let typed = '25'
let temp = Number(typed)
console.log('As a number:', temp + 5)

为什么要转换文本？🤨

console.log('25' + 5)
console.log(Number('25') + 5)

询问转换哪种温标 🔀

let choice = 'C to F'
console.log('User wants:', choice)

将输入传入函数 🛠️

function toF(c) { return c * 9 / 5 + 32 }
let userTemp = 30
console.log(userTemp, 'C =', toF(userTemp), 'F')

检查无效输入 🚫

let typed = 'banana'
let temp = Number(typed)
if (isNaN(temp)) {
  console.log('That is not a number! 🍌')
}

友好的提示 😊

console.log('Please enter a temperature in Celsius: 🌡️')
let userTemp = 18
console.log('You entered:', userTemp)

完整输入演示 🎮

console.log('Enter Celsius: 🌡️')
let typed = '20'
let temp = Number(typed)
let f = temp * 9 / 5 + 32
console.log(temp, 'C =', f, 'F')

快速检查 ✅

输入达人！🌟

console.log('Asking the user: DONE! 🌟')