The Number toExponential() method
Find out all about the JavaScript toExponential() method of a number
You can use this method to get a string representing the number in exponential notation:
new Number(10).toExponential() //1e+1 (= 1 * 10^1)
new Number(21.2).toExponential() //2.12e+1 (= 2.12 * 10^1)You can pass an argument to specify the fractional part digits:
new Number(21.2).toExponential(1) //2.1e+1
new Number(21.2).toExponential(5) //2.12000e+1Notice how we lost precision in the first example.
→ Get my JavaScript Beginner's Handbook
I wrote 21 books to help you become a better developer:
- HTML Handbook
- Next.js Pages Router Handbook
- Alpine.js Handbook
- HTMX Handbook
- TypeScript Handbook
- React Handbook
- SQL Handbook
- Git Cheat Sheet
- Laravel Handbook
- Express Handbook
- Swift Handbook
- Go Handbook
- PHP Handbook
- Python Handbook
- Linux Commands Handbook
- C Handbook
- JavaScript Handbook
- Svelte Handbook
- CSS Handbook
- Node.js Handbook
- Vue Handbook