Calculating String Byte Size in JavaScript

Introduction

In this lab, we will explore how to calculate the byte size of a given string using JavaScript. The purpose of this lab is to help you understand how to convert a string into a Blob object and obtain its size in bytes using the Blob.size property. This knowledge can be useful in various scenarios, such as when working with network requests or file uploads, where byte size is an essential factor to consider.

Skills Graph

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How to Get the Byte Size of a String in JavaScript

To get the byte size of a string in JavaScript, follow these steps:

Open the Terminal/SSH and type node to start practicing coding.
Convert the string to a Blob Object.
Use Blob.size to get the length of the string in bytes.

Here's the JavaScript code to get the byte size of a string:

const byteSize = (str) => new Blob([str]).size;

You can test this function with the following examples:

byteSize("😀"); // 4
byteSize("Hello World"); // 11

Summary

Congratulations! You have completed the Byte Size of String lab. You can practice more labs in LabEx to improve your skills.

Calculating String Byte Size

Introduction

Skills Graph

How to Get the Byte Size of a String in JavaScript

Summary

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