How statistics are calculated
We count how many offers each candidate received and for what salary. For example, if a Android developer with JavaScript with a salary of $4,500 received 10 offers, then we would count him 10 times. If there were no offers, then he would not get into the statistics either.
The graph column is the total number of offers. This is not the number of vacancies, but an indicator of the level of demand. The more offers there are, the more companies try to hire such a specialist. 5k+ includes candidates with salaries >= $5,000 and < $5,500.
Median Salary Expectation – the weighted average of the market offer in the selected specialization, that is, the most frequent job offers for the selected specialization received by candidates. We do not count accepted or rejected offers.
Trending Android tech & tools in 2024
Where is JavaScript used?
Browser Boss Level: Enhancing Web Interactivity
- Gives life to web pages by making them twerk, wiggle, and dance to user actions — because static is so '90s.
Backend Bonanza: Node.js Revolution
- Blurs the frontend-backend line by enabling devs to speak one language and code in their sleep – pajama coders unite!
Mobile Mayhem: React Native Madness
- Whips up mobile apps like a street magician pulling rabbits out of hats – same JavaScript, different party tricks.
Game Glory: Three.js Fantasy
- Transforms dull lines of code into epic 3D web games that make you forget you have a job—you're welcome, procrastinators!
JavaScript Alternatives
TypeScript
TypeScript is a strongly typed superset of JavaScript that compiles to plain JavaScript. It provides optional static typing, enhanced IDE support, and better scalability for large codebases.
// TypeScript Code Example:
function greet(name: string) {
console.log('Hello, ' + name.toUpperCase() + '!!');
}
greet('Developer');
- Enhances code quality and understandability.
- Ideal for large-scale applications.
- Requires compilation step.
- Some learning curve for JS developers.
- Rich IDE support with autocompletion.
Dart
Dart is a scalable language optimized for building UI, with a reactive framework like Flutter for crafting natively compiled apps for mobile, web, and desktop.
// Dart Code Example:
void main() {
print('Hello, Dart!');
}
- Highly performant on multiple platforms.
- Steeper learning curve for non-Java/C# devs.
- Favors expressive and robust applications.
- Less popular than JavaScript in the web domain.
- Strong ecosystem with Flutter for UI development.
CoffeeScript
CoffeeScript is a little language that compiles into JavaScript. It provides syntactic sugar inspired by Ruby, Python and Haskell to enhance JavaScript's brevity and readability.
# CoffeeScript Code Example:
greet = (name) -> console.log "Hello, #{name}!"
greet 'World'
- Clearer and more concise syntax than JavaScript.
- Limited community and resources.
- Improves code readability and writability.
- Additional compile step can slow down development.
- Less verbose and reduced boilerplate code.
Quick Facts about JavaScript
Conceived in a Hurry: The Birth of JavaScript
Imagine cooking up a programming language in just 10 days! That's what Brendan Eich did back in 1995. As if he was on a TV cooking contest, he whipped up JavaScript for Netscape, giving birth to a language that would soon be everywhere like glitter at a craft fair. At first, it was called Mocha, which sounds more like a Starbucks order, but soon morphed into JavaScript, a marketing move to mooch off Java's fame. And just like that, an internet rockstar was born!
From Vanilla to Full-Flavored ECMAScript
JavaScript is like a cheese that keeps maturing. What started out as a simple scripting language is now governed by ECMAScript standards, which sounds like a council of wizards deciding the fate of code. From ES1 in 1997 to the recent ES2020, JavaScript has been pulling rabbits out of hats with promises, async/await, and spread operators, making coders’ lives more magical.
// From callbacks to the magic of async/await
async function getTheGoodStuff(url) {
let treasureChest = await fetch(url);
let gold = await treasureChest.json();
console.log(gold);
}
Not Just for Browsers Anymore
Some techies thought JavaScript was just a browser’s one-trick pony, but boy, were they wrong! Node.js galloped in and changed the game in 2009. This environment enabled JavaScript to sprint outside the browser and onto servers, which was like teaching a fish to ride a bicycle. Now it's not just web pages that JavaScript can animate, but whole servers that dance to its tune!
// JavaScript taking over the server side
const http = require('http');
http.createServer((req, res) => {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Look ma, I can server!');
}).listen(1337, '127.0.0.1');
What is the difference between Junior, Middle, Senior and Expert JavaScript developer?
Seniority Name | Years of Experience | Responsibilities & Activities | Average Salary (USD/year) |
---|---|---|---|
Junior Developer | 0-2 years |
| $50,000 - $70,000 |
Middle Developer | 2-5 years |
| $70,000 - $100,000 |
Senior Developer | 5+ years |
| $100,000 - $140,000 |
Expert/Team Lead | 8+ years |
| $140,000 - $180,000+ |
Top 10 JavaScript Related Tech
JavaScript (The Mother Tongue)
In the realm of coding, JavaScript sits on the throne, lording over the web like a digital king. It’s the scripting language that makes web pages tickle your eyeballs with interactivity. It’s everywhere - like a ninja, but less stealthy and more in-your-face with pop-ups.
// Classic 'Hello, World!' in JavaScript
console.log('Hello, World!');
Node.js (The Backend Magician)
Ah, Node.js, the Swiss Army knife of JavaScript runtimes. It’s how JS flipped the script from a front-end only diva to a full stack rockstar. With Node.js, you can schmooze with databases and servers, whisper sweet nothings to APIs, and do all sorts of backend wizardry.
// A simple Node.js server that says 'Hello World'
const http = require('http');
http.createServer((req, res) => {
res.write('Hello World!');
res.end();
}).listen(3000);
React (The UI Artiste)
Imagine a painter, but instead of brushes, they wield components. React takes building user interfaces to a fine art. It’s like Lego for adults – you can snap together bits of UI and make an app that looks good without your users wanting to gouge their eyes out.
// An appetizer of React: A simple component
class HelloMessage extends React.Component {
render() {
return <div>Hello {this.props.name}!</div>;
}
}
ReactDOM.render(<HelloMessage name="Taylor" />, document.getElementById('root'));
Vue.js (The Progressive Framework)
It’s the new kid on the block compared to Angular and React, but Vue.js is like that charming friend who gets along with everyone. Its progressive nature means you can be as committed as you want; start small with a sprinkle of reactivity on a page or go full SPA (Single Page Application) – Vue’s got your back.
// A Vue.js instance controlling a simple #app element
new Vue({
el: '#app',
data: {
message: 'Hello Vue.js!'
}
});
Angular (The Full-Blown SPA Architect)
For those who like their apps like they like their coffee – robust and full-bodied – Angular is the go-to. It’s an all-in-one solution for building complex web apps that can probably do your taxes and fold your laundry. Take that, React!
// A taste of Angular: a basic component
import { Component } from '@angular/core';
@Component({
selector: 'app-root',
template: `<h1>Hello {{title}}!</h1>`,
})
export class AppComponent {
title = 'world';
}
Webpack (The Bundling Bandit)
Because nobody likes to wait for a million files to load, Webpack takes all your precious code and assets and smushes them into tidy little packages. It might feel like overkill for your cat blog, but when you need to scale, Webpack’s your bundling bouncer, keeping load times on a tight leash.
// Webpack config snippet to give you a taste
module.exports = {
entry: './src/index.js',
output: {
filename: 'bundle.js'
}
};
Redux (The State Sultan)
When your app’s state management resembles a spaghetti monster, Redux enters the stage. It’s the source of truth that stores your state in one place and allows you to manage it like a zen master, untangling that vicious noodle monster into a neatly organized bento box.
// Redux in a nutshell: Reducer function
function counter(state = 0, action) {
switch (action.type) {
case 'INCREMENT':
return state + 1;
case 'DECREMENT':
return state - 1;
default:
return state;
}
}
TypeScript (The JavaScript Whisperer)
TypeScript is JavaScript's bigger, smarter sibling. It's like having a grammar-obsessed friend proofread your code. It adds types to JS to keep your code from acting like a clumsy oaf, tripping over undefined variables and unexpected types.
// TypeScript: JavaScript with superpowers
function greet(person: string, date: Date): string {
return `Hello ${person}, today is ${date.toDateString()}!`;
}
greet("Brendan Eich", new Date());
ES6+ (The Evolving Specification)
ES6 brought JavaScript out of the stone age with new syntax and features like arrow functions, classes, and template strings. It’s like going from flip phone text messaging to sending iMessages with tap-backs and confetti. It’s still the same language but with more spice.
// ES6+ arrow functions are the bee's knees
const add = (a, b) => a + b;
console.log(add(2, 3)); // Outputs: 5
Jest (The Testing Jester)
Writing tests isn’t just for the paranoid. Jest makes it a party! It’s a delightful JavaScript testing framework that runs your tests with the speed of a gazelle chased by a cheetah. Jest ensures that your code doesn't break like a cookie in a toddler’s hand.
// A simple Jest test to check if truth is truthy
test('the truth', () => {
expect(true).toBeTruthy();
});