In this Article we will go through how to get the number of days in given month 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 daysInMonth = (month, year) => new Date(year, month, 0).getDate();

In this Article we will go through how to get the timezone 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 getTimezone = () => Intl.DateTimeFormat().resolvedOptions().timeZone;

In this Article we will go through how to get the tomorrow 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 tomorrow = (d => new Date(d.setDate(d.getDate() + 1)))(new Date);

In this Article we will go through how to get the total number of days in a year 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 numberOfDays = year => (((year % 4 === 0) && (year % 100 !== 0)) || (year % 400 === 0)) ? 366 : 365;

In this Article we will go through how to get the weekday of a 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 getWeekday = date => ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'][date.getDay()];

In this Article we will go through how to get the yesterday 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 yesterday = (d => new Date(d.setDate(d.getDate() - 1)))(new Date);

In this Article we will go through how to initialize the current date but set time to midnight 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 midnightOfToday = () => new Date(new Date().setHours(0, 0, 0, 0));

In this Article we will go through how to sort an array of dates 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 sortDescending = arr => arr.sort((a, b) => a.getTime() > b.getTime());
const sortAscending = arr => arr.sort((a, b) => a.getTime() < b.getTime());

In this Article we will go through how to check if an element is a descendant of another 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 isDescendant = (child, parent) => parent.contains(child);

In this Article we will go through how to check if an element is focused 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 hasFocus = ele => (ele === document.activeElement);