Sep 9, 2021 JavaScript
How to get the arrays of digits from a number in JavaScript

In this Article we will go through how to get the arrays of digits from a number 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 digitize = n => `${n}`.split('').map(v => parseInt(v, 10));

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 round a number to a given number of digits in JavaScript

In this Article we will go through how to round a number to a given number of digits 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 round = (n, decimals = 0) => Number(`${Math.round(`${n}e${decimals}`)}e-${decimals}`);

Sep 9, 2021 JavaScript
How to subtract arguments in JavaScript

In this Article we will go through how to subtract arguments 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 subtract = (...args) => args.reduce((a, b) => a - b);

Sep 9, 2021 JavaScript
How to truncate a number at decimal in JavaScript

In this Article we will go through how to truncate a number at decimal 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 truncate = n => ~~n;

Sep 9, 2021 JavaScript
How to truncate a number to a given number of decimal places without rounding in JavaScript

In this Article we will go through how to truncate a number to a given number of decimal places without rounding 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 toFixed = (n, fixed) => `${n}`.match(new RegExp(`^-?\\d+(?:\.\\d{0,${fixed}})?`))[0];

Sep 9, 2021 JavaScript
How to box handler in JavaScript

In this Article we will go through how to box handler 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 boxHandler = x => ({ next: f => boxHandler(f(x)), done: f => f(x) });

Sep 9, 2021 JavaScript
How to check if a value is a function in JavaScript

In this Article we will go through how to check if a value is a function 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 isFunction = v => ['[object Function]', '[object GeneratorFunction]', '[object AsyncFunction]', '[object Promise]'].includes(Object.prototype.toString.call(v));

Sep 9, 2021 JavaScript
How to check if a value is a generator function in JavaScript

In this Article we will go through how to check if a value is a generator function 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 isGeneratorFunction = v => Object.prototype.toString.call(v) === '[object GeneratorFunction]';

Sep 9, 2021 JavaScript
How to check if a value is an async function in JavaScript

In this Article we will go through how to check if a value is an async function 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 isAsyncFunction = v => Object.prototype.toString.call(v) === '[object AsyncFunction]';