Gist 8487030

100%

✓ Published0🌍 Public

Last edited Jan 18, 2014

Created on Jan 18, 2014

This example shows a Node.js server endpoint that handles user creation through a series of asynchronous validation and persistence steps. The code demonstrates a Koa-style generator function using `yield` for control flow, with `parse` to read the request body and `password` to generate a salt and hash. It validates the user schema, checks for an existing username with `users.findOne`, and inserts the new user with `users.insert`, returning a 201 status. The example relies on promise-based database and password utilities without any visualization libraries.

AI-generated description

Similar vizzes

Loading thumbnail…

Gist cb0863f6e1b515510fa87520bd854996

This example demonstrates how to automatically hash a user's password before saving it to a MongoDB database using Mongoose middleware. The code defines a `User` schema with email and password fields, then attaches a `pre('save')` hook that checks if the password was modified and applies bcrypt’s `hashSync` function with a salt factor of 10. It also includes a `comparePassword` method that uses `bcrypt.compare` to verify passwords. The example shows a test case where a new user is created and saved, logging the resulting bcrypt-hashed password.

Aabernier

65% match

Loading thumbnail…

Async node-postgres sample code

This example demonstrates a web server that tracks and reports visitor counts using an asynchronous PostgreSQL workflow. It uses Express routes and the `node-postgres` library to insert a timestamp into a `visit` table and then query the total count, returning the result as an HTTP response. The code highlights both modern async/await syntax with `await query(...)` and a callback-style alternative using `errto` for error handling, showing two equivalent approaches for database interactions.

Aalessioalex

61% match

Loading thumbnail…

request post node.js

This example demonstrates how to send an HTTP POST request to a local server’s `/login` endpoint using the Node.js `request` library. It configures a set of default headers, including a Firefox user agent and character-set preferences, and transmits a JSON payload containing a username and password. The callback logs the response body if the server returns a 200 status code, showing a basic authentication workflow.

Aalessioalex

60% match

Loading thumbnail…

Gist 444255

This example demonstrates a Node.js server that queries MongoDB collections and logs their contents to the console, primarily as a backend testing or debugging tool. The code uses the `mongo.Db` and `mongo.Server` APIs to connect to a local MongoDB instance on port 27017, then defines HTTP routes via a `get()` handler. For each route, it retrieves documents from specific collections—`some-collection` and `another-collection` (the latter with a limit of 10)—and prints each item using `sys.puts` and `sys.inspect`. The visualization aspect is absent; the example focuses on database interaction and response handling.

CCaged

60% match

Loading thumbnail…

Advance Topic About Server Credential

This example demonstrates key differences between Node.js server credential and header-handling techniques, contrasting `response.setHeader` with `response.writeHead` for setting status codes, content-length, content-type, and cookies. It also covers Express routing parameters (`req.params` and `req.query`) with links to Stack Overflow discussions. The code shows practical use of JWT (via `jwt-simple`) for token generation and verification, and Bcrypt for password hashing and comparison, alongside guidance on creating custom Express middleware from the official documentation. The gist serves as a reference card for common authentication and HTTP response patterns.

Aamazingandyyy

60% match

Loading thumbnail…

Gist 5161583

This visualization demonstrates a Node.js server’s error-handling pattern using domains to manage ECONNRESET socket hangups. It shows how an HTTP request and response object are added to a domain, with an error listener that logs non-reset errors and disposes the domain afterward. The code uses the `domain.create()`, `reqd.add()`, `reqd.on('error')`, and `reqd.dispose()` APIs from Node’s core domain module, integrated as middleware via `app.use()`. The example highlights the flow of middleware execution and error interception in a server context.

Aalessioalex

60% match

Loading thumbnail…

Gist 4ff85e89516594d9399c15b3c436878f

This example demonstrates JavaScript Promise patterns for asynchronous server communication, showing fetch(), .then(), .catch(), Promise.all/race, custom Promise construction, and async/await syntax. The code samples use the browser's built-in fetch() API against document.URL.toString() to simulate server checks, with console.log output for results and error handling. It also includes a setTimeout-based delay Promise example to illustrate timing control. The gist serves as educational reference material, contrasting Promise chains, custom Promise creation, and sugar-syntax async functions.

MMistyBlunch

59% match

Loading thumbnail…

Gist 1075489a3f6f94d13b2ab76cff4c7cea

This example visualizes the asynchronous execution order of Node.js operations by logging their completion times relative to a shared start timestamp. It uses Node’s `https.request` to fetch Google’s homepage, `crypto.pbkdf2` for four CPU-intensive password hashes, and `fs.readFile` to read a local file. The console output reveals how the event loop interleaves I/O callbacks, with the network request finishing before the file read and hash computations, illustrating the non-blocking concurrency model.

Aamazingandyyy

59% match