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JavaScript - Exercises, Practice, Solution

What is JavaScript?

JavaScript is a cross-platform, object-oriented scripting language. It is a small and lightweight language. Inside a host environment ( a web browser), JavaScript can be connected to the objects of its environment to provide programmatic control over them.

JavaScript contains a standard library of objects, such as Array, Date, and Math, and a core set of language elements such as operators, control structures, and statements. Core JavaScript can be extended for a variety of purposes by supplementing it with additional objects.

The best way we learn anything is by practice and exercise questions. We have started this section for those (beginner to intermediate) who are familiar with JavaScript. Hope, these exercises help you to improve your JavaScript coding skills. Currently following sections are available, we are working hard to add more exercises. Happy Coding!

List of JavaScript Exercises :

More to Come !

Popularity of Programming Language
Worldwide, May 2022 compared to a year ago:

`
Rank Change Language Share Trend
1 Python 27.85 % -2.5 %
2 Java 17.86 % -0.1 %
3 Javascript 9.17 % +0.4 %
4 C# 7.62 % +0.7%
5 C/C++ 7.0 % +0.4 %
6 PHP 5.36 % -1.0 %
7 R 4.34 % +0.5 %
8 up arrow TypeScript 2.39 % +0.7 %
9 down arrow Objective-C 2.25 % +0.0 %
10 Swift 2.05 % +0.3 %
11 up arrow Matlab1.82% +0.2 %
12 down arrow Kotlin 1.58 % -0.2 %
13 Go 1.38 % -0.1 %
14 up arrow Rust 1.15 % +0.3 %
15 Ruby 1.14 % +0.0%
16 down arrow VBA 1.04 % +0.0 %
17 up arrow Ada 0.81 % +0.2 %
18 up arrow Scala 0.7 % +0.2 %
19 down arrow Dart 0.66 % +0.0 %
20 Abap 0.66 % +0.1 %
21 down arrow Visual Basic 0.66 % +0.0%
22 Lua 0.5 % +0.0 %
23 up arrow Groovy 0.45 % +0.0 %
24 down arrow Perl 0.45 % +0.0 %
25 down arrow Julia 0.4 % +0.0 %
26 up arrow Cobol 0.28 % +0.0 %
27 Haskell 0.28 % +0.0 %
28 Delphi/Pascal 0.14 % +0.0 %

Source : https://pypl.github.io/PYPL.html

TIOBE Index for May 2022

May 2022 May 2021 Change Programming Language Ratings Change
1 2 up arrow Python 12.74% +0.86%
2 1 down arrow C 15.59% -1.80%
3 3 Java 10.99% -0.74%
4 4 C++ 8.83% +1.01%
5 5 C# 6.39% +1.98%
6 6 Visual Basic 5.86% +1.85%
7 7 JavaScript 2.12% -0.33%
8 8 Assembly language 1.92% -0.51%
9 10 up arrow SQL 1.87% +0.16%
10 9 down arrow PHP 1.52% -0.34%
11 17 up arrow Delphi/Object Pascal 1.42% +0.22%
12 18 up arrow Swift 1.23% -0.08%
13 13 up arrow R 1.22% -0.16%
14 16 up arrow Go 1.11% -0.11%
15 12 down arrow Classic Visual Basic 1.03% +0.38%
16 21 up arrow Objective-C 1.03% +0.24%
17 19 up arrow Perl 0.99% -0.05%
18 37 up arrow Lua 0.98% +0.64%
19 11 down arrow Ruby 0.86% -0.64%
20 15 down arrow MATLAB 0.82% -0.41%

Source : https://www.tiobe.com/tiobe-index/

Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.

Note : Since JavaScript is a loosely-typed, dynamic and expressive language, you may accomplish the same task in various ways. Therefore the ways (solution of the exercises) described here are not the only ways to do stuff. Rather, it would be great, if this helps you anyway to choose your own methods.

[ Want to contribute to JavaScript exercises? Send your code (attached with a .zip file) to us at w3resource[at]yahoo[dot]com. Please avoid copyrighted materials.]



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JavaScript: Tips of the Day

Checks if a string is an anagram of another string (case-insensitive, ignores spaces, punctuation and special characters)

Example:

const isAnagram = (str1, str2) => {
  const normalize = str =>
    str
      .toLowerCase()
      .replace(/[^a-z0-9]/gi, '')
      .split('')
      .sort()
      .join('');
  return normalize(str1) === normalize(str2);
};
console.log(isAnagram('iceman', 'cinema')); // true

Output:

true