In this Article we will go through how to sort an array of items by given key 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 sortBy = (arr, k) => arr.concat().sort((a, b) => (a[k] > b[k]) ? 1 : ((a[k] < b[k]) ? -1 : 0));

In this Article we will go through how to get the rank of an array of 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 ranking = (arr) => arr.map((x, y, z) => z.filter(w => w > x).length + 1);

In this Article we will go through how to get the sum of an array of 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 sum = arr => arr.reduce((a, b) => a + b, 0);

In this Article we will go through how to get the unique values 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 unique = arr => [...new Set(arr)];

In this Article we will go through how to get union of arrays 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 union = (...arr) => [...new Set(arr.flat())];

In this Article we will go through how to group an array of objects by a key 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 groupBy = (arr, key) => arr.reduce((acc, item) => ((acc[item[key]] = [...(acc[item[key]] || []), item]), acc), {});

In this Article we will go through how to get indices of a value in 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 indices = (arr, value) => arr.reduce((acc, v, i) => (v === value ? [...acc, i] : acc), []);

In this Article we will go through how to get the average 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 average = arr => arr.reduce((a, b) => a + b, 0) / arr.length;

In this Article we will go through how to get the intersection of arrays 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 getIntersection = (a, ...arr) => [...new Set(a)].filter(v => arr.every(b => b.includes(v)));

In this Article we will go through how to find the maximum item of an array by given key 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 maxBy = (arr, key) => arr.reduce((a, b) => a[key] >= b[key] ? a : b, {});