Sep 9, 2021 JavaScript
How to calculate the angle of a line defined by two points in JavaScript

In this Article we will go through how to calculate the angle of a line defined by two points 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:

// In radians
const radiansAngle = (p1, p2) => Math.atan2(p2.y - p1.y, p2.x - p1.x);

// In degrees
const degreesAngle = (p1, p2) => Math.atan2(p2.y - p1.y, p2.x - p1.x) * 180 / Math.PI;

Sep 9, 2021 JavaScript
How to calculate the distance between two points in JavaScript

In this Article we will go through how to calculate the distance between two points 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 distance = (p1, p2) => Math.sqrt(Math.pow(p2.x - p1.x, 2) + Math.pow(p2.y - p1.y, 2));

Sep 9, 2021 JavaScript
How to calculate the linear interpolation between two numbers in JavaScript

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;

Sep 9, 2021 JavaScript
How to calculate the midpoint between two points in JavaScript

In this Article we will go through how to calculate the midpoint between two points 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 midpoint = (p1, p2) => [(p1.x + p2.x) / 2, (p1.y + p2.y) / 2];

Sep 9, 2021 JavaScript
How to check if a point is inside a rectangle in JavaScript

In this Article we will go through how to check if a point is inside a rectangle 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 isInside = (point, rect) => point.x > rect.left && point.x < rect.right && point.y > rect.top && point.y < rect.bottom;

Sep 9, 2021 JavaScript
How to get the tomorrow date in JavaScript

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);

Sep 9, 2021 JavaScript
How to get the total number of days in a year in JavaScript

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;

Sep 9, 2021 JavaScript
How to get the weekday of a date in JavaScript

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()];

Sep 9, 2021 JavaScript
How to get the yesterday date in JavaScript

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);

Sep 9, 2021 JavaScript
How to initialize the current date but set time to midnight in JavaScript

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));