JavaScript: Convert the length of a given string in bytes

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

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 
const byte_Size = str => new Blob([str]).size;
console.log(byte_Size('Hello World'));  

Sample Output:


Pictorial Presentation:

JavaScript Fundamental: Convert the length of a given string in bytes


flowchart: Convert the length of a given string in bytes

Live Demo:

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

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript program to removes non-printable ASCII characters from a given string.
Next: Write a JavaScript program to replace the names of multiple object keys with the values provided.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

Follow us on Facebook and Twitter for latest update.

JavaScript: Tips of the Day

Randomizes the order of the values of an array, returning a new array


const tips_shuffle = ([...arr]) => {
  let x = arr.length;
  while (x) {
    const i = Math.floor(Math.random() * x--);
    [arr[x], arr[i]] = [arr[i], arr[x]];
  return arr;
const foo = [2, 4, 6];


[4, 2, 6]


We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook