JavaScript Hacks: 5 Shortcuts to Save Time and Boost Productivity

Learn JavaScript hacks that will help you write code faster and more efficiently

Photo by the blowup on Unsplash

Let’s explore 5 JavaScript hacks that will help you write code faster and more efficiently. We’ll also provide code snippets to illustrate each hack.

Use Array.from() to Convert Arrays

If you’re dealing with an array-like object that doesn’t have the same properties as a standard array, you can use Array.from() to convert it. This method takes an array-like object as its first argument and an optional mapping function as its second argument.

Here’s an example:

const arrayLike = {0: 'a', 1: 'b', 2: 'c', length: 3};
const array = Array.from(arrayLike, x => x.toUpperCase());
console.log(array); // Output: ["A", "B", "C"]

Use the Spread Operator to Merge Arrays

Instead of using a loop to merge arrays, you can use the spread operator to do it in one line of code. The spread operator takes an iterable, such as an array, and expands it into individual elements.

Here’s an example:

const array1 = [1, 2, 3];
const array2 = [4, 5, 6];
const mergedArray =…