编写一个JavaScript函数，该函数返回包含您的姓名的字符串

Question

So if my name is Ryan, I need to use a function to produce Ryan back to me.

In class, we did

function readnumber()
{
var s = readline();
return (s * 1);
}

We weren't taught anything else, so I'm really confused.

How about if I need to use a function to take a number and add 10 to it?

Answer 1

Easiest way for someone named Ryan is simply

function foo() {
    return "Ryan";
}

So you would then have

foo(); // "Ryan"

---

If you require some user interaction, then a simple modification of an example from Node.js's documentation on readline gives you

var readline = require('readline'),
    rememberedName = null; // a variable to hold the name

var rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

rl.question("What is your name? ", function(answer) {
    console.log("Hello", answer); // great we now know the name
    rememberedName = answer; // store it so a function can return it
    rl.close();
});

// then after

function foo() { // a function which returns the name
    return rememberedName;
}

Answer 2

Perhas something like this will help you:

function namePrompt()
  {
   var name = prompt("What's your name?"); 
   alert("Hello " + name);
  }

Th result will prompt the user for their name. After input, a dialog box will pop up saying "Hello " together with the user's name.

If you're using Node.js, change alert to Console.log .