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Function and module.exports error issue NODE.js

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[前端(javascript) 所属分类 前端(javascript) | 发布者 店小二04 | 时间 2018 | 作者 红领巾 ] 0人收藏点击收藏

:)

I have a somewhat easy answer for you guys to answer as you always do. Im new at functions and whatnot, iv watched some tutorials about exporting your functions to another node.js application,

Im attempting to generate some random numbers for a external module.

this is what i have setup.

(index.js file)

function randNumb(topnumber) { var randnumber=Math.floor(Math.random()*topnumber) } module.exports.randNumb();

(run.js)

var index = require("./run.js"); console.log(randnumber);

Well My Issue is when i run the index.js file, i get this error from the console.

TypeError: Object #<Object> has no method 'randNumb' at Object.<anonymous> (C:\Users\Christopher Allen\Desktop\Node Dev Essential s - Random Number\index.js:8:16) at Module._compile (module.js:449:26) at Object.Module._extensions..js (module.js:467:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Module.runMain (module.js:492:10) at process.startup.processNextTick.process._tickCallback (<strong>node.js</strong>:244:9)

I ran the run.js in the beginning, this is what i got.

ReferenceError: randNumb is not defined at Object.<anonymous> (C:\Users\Christopher Allen\Desktop\Node Dev Essential s - Random Number\run.js:3:1) at Module._compile (module.js:449:26) at Object.Module._extensions..js (module.js:467:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Module.runMain (module.js:492:10) at process.startup.processNextTick.process._tickCallback (<strong>node.js</strong>:244:9)

Problem courtesy of: Christopher Allen

Solution

In the randNum function, don't forget to:

return randnumber;

Also in index.js, export the function like so:

exports.randNumb = randNumb;

Invoke it like this in run.js:

console.log(randNumber(10));

Solution courtesy of: Darren

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