Messy code wastes your time & efforts. It poisons apps. Clean code is obligatory for a successful project: learn to write small and plain functions.

Object.values() and Object.entries() are another improvement step for JavaScript developers to have helper functions that iterate over object properties.

Hacks influence negatively the way JavaScript programs are coded. Find out how to remove old hacks and make your code shine again using ES2015 features.

Hacks influence negatively the way JavaScript programs are coded. Find out how to remove old hacks and make your code shining again using ES2015 features.

Well-known symbols allow to customize many JavaScript algorithms: elements iteration, instanceof, regexp string methods, derived object and more.

Hoisting moves variables and functions to the beginning of the scope. But this term is no longer valid for `let`, `const` and `class`: and here's why.

ES2015 improves the object literals (or initialiazers) to set the prototype using __proto__, use super, shorthand method declarations, computed names.

ES2016 is a small but important release. Examine the must know details about the new array method includes() and the exponentiation operator.

The history how JavaScript from a complementary language in 1995 became the most popular language these days.

ES6 improves the way arrays are created in JavaScript. See how the combination of array literal, spread operator and iterators upgrade array initialization.