A Mistery of parseInt() in JavaScript

A Mistery of parseInt() in JavaScript

Solving a mistery of how parseInt() parses small float numbers in JavaScript. parseInt() is a built-in JavaScript function that parses integers from numerical strings.

Solving a mistery of how parseInt() parses small float numbers in JavaScript.

parseInt() is a built-in JavaScript function that parses integers from numerical strings. For example, let’s parse the integer from the numeric string '100':

const number = parseInt('100');
number; // 100

As expected, '100' is parsed to integer 100.

parseInt(numericalString, radix) also accepts a second argument: the radix at which the numerical string argument is. The radix argument allows you to parse integers from different numerical bases, the most common being 2, 8, 10, and 16.

Let’s use parseInt() to parse a numerical string in base 2:

const number = parseInt('100', 2);
number; // 4

parseInt('100', 2) parses '100' as an integer in numerical base 2: thus it returns the value 4 (in decimal).

That’s pretty much a short introduction to parseInt().

  • A mystery behavior of parseInt()
  • Discovering the mystery of parseInt()

javascript

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

Hire Dedicated JavaScript Developers -Hire JavaScript Developers

Hire dedicated JavaScript Developers who are proficient in AngularJS, ReactJS, NodeJS, & VueJS frameworks. Get flexible hiring models as per your business requirements.

JavaScript Shopping Cart - Javascript Project for Beginners

JavaScript Shopping Cart - javascript shopping cart tutorial for beginnersBuy me a coffee 🍺 https://www.paypal.com/paypalme/ziddahSource Code: https://bit....

The essential JavaScript concepts that you should understand

The essential JavaScript concepts that you should understand - For successful developing and to pass a work interview

Data Types In JavaScript

JavaScript data types are kept easy. While JavaScript data types are mostly similar to other programming languages; some of its data types can be unique. Here, we’ll outline the data types of JavaScript.

Introduction With Basic JavaScript

Introduction With Basic JavaScript - Unlike most programming languages, the JavaScript language has no concept of input or output. It is designed to run as a scripting language in a host environment, and it is up to the host environment to provide mechanisms for communicating with the outside world.