How to receive a JSON file from a glitch-hello-website to a node.js app

Coding Help
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Hi I’m trying to make a login thing in html and I’m trying to make it so basically you type your email in the box and then it emails you a code that you have to type to login, basically like glitch’s “magic email” login. I got the email system set up and here is what I’m trying to do. In my website the script does a http POST and the node.js app receives a JSON file so it can email someone. Then the node.js app can returns the code. I just need help on sending the JSON file and returning a 6 digit code. Please help!

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Do you have some code we can work on, for the JSON sending part?

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Here is the Website code and Node.Js code

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Uhhh, what about the POST request part?

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I haven’t added that yet and that’s the part I need help on

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Sorry for asking so many questions, but do you have the code that does this?

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No I don’t have the code for that yet.

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Now’s a good a time to start on that as any! Here’s a guide on how to POST a JSON file Using the Fetch API - Web APIs | MDN

You end up needing to do it from JavaScript, because forms tend to encode stuff in other formats, such as urlencoded.

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I did that on my website but how do I set it to receive on my node.js app?

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what framework are you using on the server side? express?

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Yeah on node.js

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Express 4.x - API Reference they have a middleware for accepting JSON data. use that, and you can get the stuff with req.body Express 4.x - API Reference

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Thanks but is it possible to send the JSON file from a glitch-hello-website to a node.js app?

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yup, you can use nodejs’s http or https module. or if you already have code what works with fetch in a browser, you can get the node-fetch package from npm to run it on the server

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I’ve been trying to understand how to do it on that website you linked but I still don’t know.

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uh-oh, I hadn’t linked to the websites about the latest understanding of what you’re trying to do! but here’s a link for that right now: node-fetch - npm

maybe see if you can get that snippet working in isolation and then integrate it into your node.js project.

also, to clarify: this is less “send from the static site” and more “request from the node.js app”

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I looked on the site and I could figure out how to do it. I’m new to JavaScript btw

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cool, glad to hear that the example worked out. were you later able to use one of these techniques in your project?

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Oops there was a typo I meant I couldn’t do it

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oh shoot :grimacing: maybe you could share how far you got and your thoughts on what’s going wrong with the latest attempt?

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I couldn’t find the part that I was supposed to use on the node.js side

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“Part” isn’t entirely specific, but there are sort of two things to put on the node.js side. The first is the “npm package” node-fetch, which you kind of find by knowing the package name. That package name is “node-fetch,” so hooray, there it is. BTW in case you haven’t tried adding an npm package on Glitch before, they have a tutorial on how to do it: https://help.glitch.com/kb/article/42-how-do-i-add-an-npm-module-or-package-to-my-project/

The second thing to put on the node.js side is a piece of code that uses the package. I suggested that you try is to get sample piece of code from the node-fetch readme. It’s a little spread out throughout the documentation, but it’s here node-fetch - npm

const fetch = require('node-fetch');

and here node-fetch - npm

fetch('https://api.github.com/users/github')
    .then(res => res.json())
    .then(json => console.log(json));

I hope this helps on what it is to find the “parts” that you’d need to try this out.

There’s still a lot for you to do though. For one, see if you can figure out where to add this code in your project so that it runs.

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