Sep 9, 2021 JavaScript
How to sort an object by its properties in JavaScript

In this Article we will go through how to sort an object by its properties only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const sort = obj => Object.keys(obj).sort().reduce((p, c) => (p[c] = obj[c], p), {});

Sep 9, 2021 JavaScript
How to compute the greatest common divisor between two numbers in JavaScript

In this Article we will go through how to compute the greatest common divisor between two numbers only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const gcd = (a, b) => b === 0 ? a : gcd(b, a % b);

Sep 9, 2021 JavaScript
How to prefix an integer with zeros in JavaScript

In this Article we will go through how to prefix an integer with zeros only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const prefixWithZeros = (number, length) => (number / Math.pow(10, length)).toFixed(length).substr(2);

Sep 9, 2021 JavaScript
How to check if multiple objects are equal in JavaScript

In this Article we will go through how to check if multiple objects are equal only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const isEqual = (...objects) => objects.every(obj => JSON.stringify(obj) === JSON.stringify(objects[0]));

Sep 9, 2021 JavaScript
How to create an empty map that does not have properties in JavaScript

In this Article we will go through how to create an empty map that does not have properties only using single line of code in JavaScript.

Let's define this short function:

The following map has __proto__ property

Sep 9, 2021 JavaScript
How to get the value at given path of an object in JavaScript

In this Article we will go through how to get the value at given path of an object only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const getValue = (path, obj) => path.split('.').reduce((acc, c) => acc && acc[c], obj);

Sep 9, 2021 JavaScript
How to immutably rename object keys in JavaScript

In this Article we will go through how to immutably rename object keys only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const renameKeys = (keysMap, obj) => Object.keys(obj).reduce((acc, key) => ({ ...acc, ...{ [keysMap[key] || key]: obj[key] }}), {});

Sep 9, 2021 JavaScript
How to omit a subset of properties from an object in JavaScript

In this Article we will go through how to omit a subset of properties from an object only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const omit = (obj, keys) => Object.keys(obj).filter(k => !keys.includes(k)).reduce((res, k) => Object.assign(res, {[k]: obj[k]}), {});

Sep 9, 2021 JavaScript
How to pick a subset of properties of an object in JavaScript

In this Article we will go through how to pick a subset of properties of an object only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const pick = (obj, keys) => Object.keys(obj).filter(k => keys.includes(k)).reduce((res, k) => Object.assign(res, {[k]: obj[k]}), {});

Sep 9, 2021 JavaScript
How to remove all null and undefined properties from an object in JavaScript

In this Article we will go through how to remove all null and undefined properties from an object only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const removeNullUndefined = obj => Object.entries(obj).reduce((a, [k, v]) => (v == null ? a : (a[k] = v, a)), {});