Bookmarks (12) clear filters

How to Understand the reduce Function in 5 Examples — Summing, seeking, chaining, and generally bringing things together.

Rubber Duck Debugging for JavaScript Developers — When you’re stuck with something, why not talk to a rubber duck?

What JavaScript Developers Should Know About curl — curl is a fantastic (and borderline universal) command line HTTP client that lets you test, tweak, and manipulate requests both targeting your own apps and APIs as well as those of others.

What Is The toJSON() Function? — If an object has a toJSON function, JSON.stringify() calls toJSON() and serializes the return value from toJSON() instead.

Building a Code Editor with CodeMirror — CodeMirror is an open source project that makes it easy to build advanced text editors into your frontend apps. Here’s how to build a code editor with it and how to connect together all the pieces.

The 80/20 Guide to Maps in JavaScript — A Map is an object that stores key/value pairs. Maps are similar to general JavaScript objects, but there are a few key differences that make maps useful..

A Practical Guide to ES6 Symbols — ES6 introduced symbols as a new primitive type to act as unique identifiers. Here’s a look at their uses.

Using Async Generator Functions in JavaScript — Async generator functions are special because you can use both await and yield in them, but what are the practical uses?

Async Await Error Handling in JavaScript — Attempts to clear up some confusion caused when handling errors in async/await scenarios.

The 80/20 Guide to JSON.stringify in JavaScript — JSON.stringify converts objects to JSON and it’s used in lots of places. Here’s a brief look at how it’s used and some of the errors it can throw.

for vs forEach() vs for/in vs for/of — An overview of the difference between these looping constructs using several different edge cases.