JavaScript: Convert the length of a given string in bytes

JavaScript fundamental (ES6 Syntax): Exercise-13 with Solution

String Length in Bytes

Write a JavaScript program to convert a given string's length to bytes.

• Convert a given string to a Blob Object.
• Use Blob.size to get the length of the string in bytes.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
// Define a function called `byte_Size` that calculates the byte size of a string.
const byte_Size = str => new Blob([str]).size;

// Test the function with different strings
console.log(byte_Size('123456'));         
console.log(byte_Size('Hello World'));    
console.log(byte_Size('â'));    

Output:

6
11
4

Visual Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-1-13 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that calculates the byte length of a string using UTF-8 encoding.
• Write a JavaScript function that converts a string to a byte array and returns its length.
• Write a JavaScript program that determines the storage size in bytes of a string, accounting for multi-byte characters.

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