In this Article we will go through how to check if an object is a promise 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 isPromise = obj => !!obj && (typeof obj === 'object' || typeof obj === 'function') && typeof obj.then === 'function';
In this Article we will go through how to check if an object is an array 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 isArray = obj => Array.isArray(obj);
In this Article we will go through how to check if an object is empty 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 isEmpty = obj => Reflect.ownKeys(obj).length === 0 && obj.constructor === Object;
In this Article we will go through how to validate a gregorian date 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 isValidDate = (m, d, y) => 0 <= m && m <= 11 && 0 < y && y < 32768 && 0 < d && d <= (new Date(y, m, 0)).getDate();
In this Article we will go through how to multiply 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 mul = (...args) => args.reduce((a, b) => a * b);
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);
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}`);
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);
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;
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];