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This is a full walkthrough for the File Metadata Microservice project on freeCodeCamp. We can install an npm package called ...

This is a full walkthrough for the Request Header Parser Microservice project on freeCodeCamp. We can set up a GET route for ...

We can use D3 to create SVG shapes on our page, to create visualizations of our data. Link to challenge ...

This is the final Quality Assurance challenge, and we are once again using Zombie to test with a different input this time. Link to ...

In the 20×20 grid below, four numbers along a diagonal line have been marked in red. The product of these numbers is 26 × 63 ...

Linear Scales allow us to scale our SVG elements. This maintains the proportions of the graph and re-scales it when the ...

One way we can assert that two values are equals is by using the loose equality (==) operator. Chai has the assert methods ...

215 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26. What is the sum of the digits of the number 2^exponent ?

All data from our database user document will be deserialized into request.user, which we can provide when rendering the profile ...

We can combine all our previous knowledge now to setup a Chai test for a POST request from scratch. Link to Challenge ...

By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the nth prime number?

We look at how to create an Express server app, and set up a basic route to return a string. We can import express with require(), ...

We look at the data and enter methods to associate a set of HTML elements with a set of data, and create and modify elements.

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By considering the terms in the ...

We're gonna clean up our project now by splitting it into 3 files. We can use Node's module.exports and require() functionalities to ...

Since hashing is so computationally expensive, we should use async methods with callback functions to not block connections ...

We can use some D3 methods to create axes from a set of data and a scale. This returns a set of SVG shapes, on which we can ...

The include() and notInclude() methods are really useful. They can be used to check if an array contains a particular element, or to ...