Introduction to Big.js

Big.js is a JavaScript library that allows arbitrary-precision decimal numbers using a string-based approach. This library is especially useful when dealing with computations that require high precision, which is not easily achieved with JavaScript's built-in number type.

Installation

You can install Big.js using npm or adding the CDN link to your HTML file. Here are the steps for installing Big.js via npm.

npm install big.js

Usage

To use Big.js, you need to create a new instance of it and pass the number you want to operate on as a string.

const Big = require('big.js');

const x = new Big('0.1');
const y = new Big('0.2');

const result = x.plus(y);

console.log(result.toString());
// Output: 0.3

As you can see in the code above, we first imported Big.js using require. We then created two Big.js instances with the values we want to operate on, and finally, we performed the addition operation using the plus() method.

Methods

Big.js provides a wide range of mathematical methods that we can use to perform arithmetic operations on Big.js instances. Some of the commonly used methods are:

• plus(): Adds two Big.js instances
• minus(): Subtracts one Big.js instance from another
• times(): Multiplies two Big.js instances
• div(): Divides one Big.js instance with another
• sqrt(): Computes the square root of a Big.js instance

To perform any of the above operations, we simply have to call the corresponding method on the Big.js instance.

Conclusion

In conclusion, Big.js is a powerful library that provides a convenient way of performing arithmetic operations with high precision. You can use it in a wide range of applications, such as financial calculations or scientific computations, where precision is of utmost importance.