In this Article we will go through how to get random items of 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 randomItems = (arr, count) => arr.concat().reduce((p, _, __, arr) => (p[0] < count) ? [p[0] + 1, p[1].concat(arr.splice(Math.random() * arr.length | 0, 1))] : p, [0, []])[1];

In this Article we will go through how to get a random item from 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 randomItem = arr => arr[(Math.random() * arr.length) | 0];

In this Article we will go through how to pick a random property 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 randomProp = obj => Object.keys(obj)[(Math.random() * Object.keys(obj).length) | 0];

In this Article we will go through how to calculate the linear interpolation 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 lerp = (a, b, amount) => (1 - amount) * a + amount * b;

In this Article we will go through how to pick random lines from a text document 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 randomLines = (str, count) => str.split(/\r?\n/).reduce((p, _, __, arr) => (p[0] < count) ? [p[0] + 1, p[1].concat(arr.splice(Math.random() * arr.length | 0, 1))] : p, [0, []])[1];

In this Article we will go through how to check if a rectangle contains other one 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:

// Returns true if `a` contains `b`
// (x1, y1) and (x2, y2) are top-left and bottom-right corners
const contains = (a, b) => (a.x1 <= b.x1 && a.y1 <= b.y1 && a.x2 >= b.x2 && a.y2 >= b.y2);

In this Article we will go through how to check if a path is relative 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 isRelative = path => !/^([a-z]+:)?[\\/]/i.test(path);

In this Article we will go through how to generate a random string from given characters 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 generateString = (length, chars) => Array(length).fill('').map((v) => chars[Math.floor(Math.random() * chars.length)]).join('');

In this Article we will go through how to capitalize a string 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 capitalize = str => `${str.charAt(0).toUpperCase()}${str.slice(1)}`;

In this Article we will go through how to check if a string consists of a repeated character sequence 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 consistsRepeatedSubstring = str => `${str}${str}`.indexOf(str, 1) !== str.length;