TypeScript vs JavaScript in 2024 - Difference EXPLAINED

Summary

This video explores the differences between TypeScript and JavaScript, highlighting their purposes, main distinctions, and the pros and cons of using TypeScript over JavaScript. It emphasizes TypeScript's type safety, additional features, and suitability for large projects, while noting JavaScript's ease of learning and versatility. The video also discusses career opportunities for developers proficient in both languages, suggesting that TypeScript is gaining popularity and can offer slightly higher salaries.

Takeaways

• 📝 JavaScript started as a simple language and evolved into a powerful tool for creating interactive web pages, apps, servers, and games.
• 🔍 TypeScript is a superset of JavaScript, adding features like type safety and other advanced programming capabilities.
• 🌐 JavaScript is dynamically typed, making it easy to learn but potentially prone to errors, while TypeScript is statically typed, offering safety but a steeper learning curve.
• 🛠 TypeScript requires compilation to JavaScript, which can be seen as an inconvenience by some developers compared to the direct scripting nature of JavaScript.
• 🔑 TypeScript's static typing allows for identifying errors during development, reducing runtime errors, unlike JavaScript which is interpreted.
• 🎯 TypeScript's additional features such as interfaces, type aliases, and abstract classes make it suitable for large-scale projects.
• 🏗️ JavaScript is ideal for smaller projects due to its simplicity and widespread use, while TypeScript is preferred for complex, enterprise-level applications.
• 💡 TypeScript can be frustrating due to the need for more code and setup compared to the flexibility and less code required in JavaScript.
• 💼 Both JavaScript and TypeScript developers are in demand, with TypeScript potentially offering slightly higher earning potential.
• 📈 TypeScript is gaining popularity, especially with new tools and frameworks like Angular and SJS being built using it.
• 📚 The choice between JavaScript and TypeScript depends on the project requirements, with JavaScript being versatile for many types of projects and TypeScript offering robust features for complex ones.

Q & A

What is the primary purpose of JavaScript?

JavaScript was initially designed as a simple language to make web pages interactive. Over time, it evolved into a powerful language used for creating a variety of applications, including web pages, apps, servers, and games.

How does TypeScript relate to JavaScript?

TypeScript is a superset of JavaScript, meaning it includes all of JavaScript's capabilities plus additional features such as type safety. TypeScript code is transpiled into JavaScript that web browsers can execute.

What is type safety and why is it important?

Type safety is a feature that helps prevent certain errors by ensuring that a variable's type is consistent and predictable. It makes the code safer and easier to maintain, especially in large projects.

Why might developers choose TypeScript over JavaScript?

Developers might choose TypeScript for its type safety, additional features like interfaces and type aliases, and its suitability for large-scale projects. It also helps in identifying compilation errors during development.

What are some disadvantages of using TypeScript compared to JavaScript?

TypeScript requires an extra compilation step, which can be seen as an inconvenience. It also has a steeper learning curve due to its additional features and requires prior knowledge of JavaScript.

How does the learning curve of TypeScript differ from JavaScript?

TypeScript has a more complicated learning curve because it includes all of JavaScript's features plus additional concepts like static typing and advanced object-oriented programming features.

What are some features that TypeScript brings to the table which JavaScript does not support natively?

TypeScript introduces features such as interfaces, type aliases, abstract classes, and generics, which are not available in plain JavaScript.

Why was TypeScript created?

TypeScript was created to address some of the shortcomings of JavaScript for large-scale and enterprise-level projects, providing features that make it more suitable for object-oriented programming and improving maintainability.

How does the job market view JavaScript and TypeScript developers?

Both JavaScript and TypeScript developers are in high demand. JavaScript is the most wanted programming language, and TypeScript, being an enhanced version of JavaScript, is also gaining popularity, especially with tools like Angular and SJS being built using it.

What is the average salary difference between JavaScript and TypeScript developers in the United States?

According to the script, JavaScript engineers in the United States earn an average of $120,000 per year, while those who know TypeScript can earn up to $135,000 per year.

What advice does the video give for choosing between JavaScript and TypeScript for a project?

The choice between JavaScript and TypeScript depends on the project's requirements. JavaScript is great for smaller to medium-sized projects, while TypeScript is a smarter choice for large, complex projects due to its object-oriented features and development tool support.

Outlines

00:00

📚 Introduction to TypeScript and JavaScript

This paragraph introduces the video's aim to compare TypeScript and JavaScript, highlighting their purposes and differences. Daniel, the presenter, will explore the main distinctions between the two languages, discuss TypeScript's advantages such as type safety and additional features, and assess which language is more relevant today. JavaScript is described as a simple yet powerful language used for web interactivity, while TypeScript is portrayed as an 'upgraded' version of JavaScript with added features like interfaces and type aliases, making it suitable for large-scale projects.

05:02

🔍 Main Differences Between TypeScript and JavaScript

The second paragraph delves into the core differences between TypeScript and JavaScript. JavaScript is characterized as a dynamic, scripting language without the need for compilation, whereas TypeScript is a statically typed superset that requires compilation into JavaScript. TypeScript's static typing is a significant advantage, allowing for error checking during compilation, reducing runtime errors. The paragraph also touches on TypeScript's object-oriented features and its suitability for large projects, contrasting with JavaScript's flexibility and ease of use for smaller projects.

Keywords

💡TypeScript

TypeScript is a superset of JavaScript that adds optional static typing to the language. It is designed to help developers catch errors early in the development process before the code runs. In the video, TypeScript is presented as an 'upgraded version' of JavaScript, emphasizing its role in enhancing developer productivity and project safety through features like type safety, interfaces, and abstract classes.

💡JavaScript

JavaScript is a high-level, interpreted programming language commonly used to create dynamic and interactive web pages. It is characterized by its dynamic typing and is the fundamental language for many web developers. The script mentions JavaScript as a simple language that has evolved into a powerful tool, used in a variety of applications including web pages, apps, servers, and games.

💡Type Safety

Type safety is a property of a programming language that helps prevent type errors by enforcing the use of types at compile time. TypeScript introduces this feature to JavaScript, allowing developers to specify the type of data a variable can hold. This is highlighted in the video as a key advantage of TypeScript, making the code safer and more predictable.

💡Compilation

Compilation is the process of translating code written in one programming language into another language, often from a high-level language to machine code. TypeScript requires compilation because it is not natively understood by web browsers; it must be converted to JavaScript. The video script points out that this is an extra step that can be seen as an inconvenience for some developers.

💡Dynamic Typing

Dynamic typing is a feature of programming languages where the type of a variable is determined at runtime. JavaScript is described as a dynamically typed language in the script, meaning that the type of a variable can change as the program executes. This contrasts with TypeScript's static typing, which is determined at compile time.

💡Interfaces

In TypeScript, an interface is a way to define a contract for the structure of an object or a class. It is part of the object-oriented features that TypeScript adds to JavaScript. The script explains that interfaces in TypeScript allow developers to define the shape of data, which is a concept not present in JavaScript.

💡Abstract Classes

Abstract classes are a feature of object-oriented programming that allow the creation of class definitions that cannot be instantiated on their own but can be extended. TypeScript includes abstract classes, which are mentioned in the script as one of the additional features that make TypeScript an 'upgraded version' of JavaScript.

💡Static Typing

Static typing is a programming language feature where the type of a variable is known at compile time, as opposed to runtime. The script discusses static typing as one of TypeScript's advantages, allowing for type correctness checks during compilation, which can help catch errors before the code is run.

💡ES6 (ECMAScript 2015)

ES6, also known as ECMAScript 2015, is a version of the JavaScript language that introduced several new features, including classes, modules, arrow functions, and more. The script mentions that TypeScript supports features from ES6 and can transpile TypeScript files into older versions of JavaScript, making it compatible with a wider range of browsers.

💡Career Opportunities

The script touches on the career opportunities available to developers who know JavaScript and TypeScript. It suggests that both languages are in high demand, with JavaScript being the most wanted programming language and TypeScript gaining popularity, especially with the rise of frameworks like Angular that are built using TypeScript.

Highlights

Introduction to the purpose of JavaScript and TypeScript.

JavaScript's evolution from a simple language to a powerful tool for web development.

TypeScript as a superset of JavaScript with additional features like type safety.

TypeScript's role as an open-source language that enhances developer productivity.

The main difference between JavaScript and TypeScript: dynamic vs. static typing.

JavaScript's use as a scripting language for interactive web pages.

TypeScript's requirement for compilation and its support for prototyping.

The lack of type concepts in JavaScript compared to TypeScript's robust type system.

TypeScript's suitability for large-scale projects due to its extended features.

JavaScript's ease of learning and its popularity for smaller projects.

Advantages of TypeScript: error identification during development, static typing, and compatibility with ES6 features.

Disadvantages of TypeScript: the need for compilation, a steeper learning curve, and setup challenges.

The rationale behind using TypeScript despite the availability of JavaScript.

The choice between JavaScript and TypeScript depends on the project's scale and requirements.

Career opportunities for JavaScript and TypeScript developers and the demand for both languages.

The earning potential for JavaScript and TypeScript engineers in the United States.

Encouragement for viewers to share their experiences and subscribe for more content.

Transcripts

my name is Daniel and in this video we

will explore both typescript and

JavaScript and figure out how they are

different from each other together

during this video we will find out the

purpose of these programming languages

we will talk about the main difference

between JavaScript and typescript we

will explore the pros and cons of

typescript compared to JS and finally

find out which of these languages is

more relevant today and shows more

promise ready let's go what typescript

and JavaScript are made for alright

before I even start comparing the two

languages it's important to understand

what they were made for this can help

you understand what they are like and

their advantages JavaScript

JavaScript started as a very simple

language over time it turned into a

powerful programming language that can

create a variety of things I would say

it's a programming language you can

easily learn but it can take several

years to become really good at it many

web developers use JavaScript to make

web pages apps servers and games more

interactive it goes well with HTML and

CSS helping to make web elements look

good and allow users to interact with

them which CSS can do on its own since

JavaScript is used in lots of different

things like websites mobile apps and

games learning it can be really useful

typescript

typescript is a superset of JavaScript

it has all the things JavaScript can do

plus some additional features when you

quote in typescript it gets turned into

JavaScript that web browsers can use

typescript also adds something called

type safety to JavaScript it's an open

source programming language so anyone

can contribute to its Improvement think

of typescript as an upgraded version of

JavaScript that makes developers lives

easier it helps them add type safety to

their projects and it brings along a

bunch of other cool features like

interfaces type aliases abstract classes

and more main differences between

typescript and JavaScript alright fellow

developer sounds like both languages are

pretty similar doesn't it so what's the

main difference between them well

JavaScript is a dynamic programming

language while typescript is aesthetic

and it's the main thing that differs one

from another JavaScript is dynamically

typed while typescript is a set

technically type upgraded version of JS

this means it allows both strict static

typing and dynamic typing this makes

typescript code safer but it can also be

a bit more challenging to write so the

language you pick depends on your

project and the style of quote you

prefer to use however the difference

between these two languages don't stop

there here are some other things that

make them different JavaScript is a

scripting language used to make web

pages interactive while typescript is an

expanded version of JavaScript

typescript code requires compilation and

JavaScript code doesn't typescript

supports prototyping while JavaScript

doesn't in typescript you use scenes

like types and interfaces to explain the

data you are working with but in

JavaScript there is no such concept

typescript offers a robust time system

with features like generics and

JavaScript capabilities making it well

suited for large projects on the other

hand JavaScript is a great choice for

smaller projects and finally JavaScript

is an easy language to learn while

typescript has a bit more complicated

learning curve and requires prior

knowledge of scripting advantages of

typescript over JavaScript guys before

we move on I try to make educational

content in an entertaining way make it

fun instead of boring in return please

like this video And subscribe to my

Channel if you enjoy my content

all right it folks might ask what is so

special about typescript what can make

developers choose it over.js in fact

there are a few distinctive advantages

of using typescript over JavaScript

first of all typescript identifies

compilation errors during development

that is before code runs this reduces

the chances of runtime errors in

contrast JavaScript is an interpreted

language secondly typescript offers

static or strong typing this means it

allows type correctness checks during

compilation and that sounds in

JavaScript cannot do and finally

typescript is essentially JavaScript

with extra features including those from

es6 while these features might not be

supported by your chosen web browser the

typescript compiler can convert TS files

into ES3 ES4 and es5 versus Z are

compatible disadvantages of typescript

but even despite all its great features

typescript isn't perfect you're not

perfect I'm not perfect because there is

a number of things about it that might

annoy developers first of all 20s file

compilation happens typescript requires

an extra step and this extra step can be

seen as an inconvenience for developers

and this is why many of them prefer to

avoid working with typescript another

important disadvantage is that learning

typescript is more challenging compared

to JavaScript typestrip demands more

scripting expertise besides many

developers prefer mastering JavaScript

first before working with typescript and

in my opinion this is a smart way to

learn typescript and finally for

programmers typescript can be a bit

frustrating when it comes to setting up

things one of the main downsides is that

you have to write a lot of things by

hands unlike JavaScript where you have

less code to write and more freedom

typescript can feel a bit hard and

unflexible in comparison why use

typescript when JS is available so after

you consider all these pros and cons you

might have a question I myself had at

some point if there is Javascript and

it's so popular and widespread why use

typescript then you see when JavaScript

first came into Bane the folks who made

it through of it as a language for

making things happen on the client side

but over time they saw that it could

also do some stuff on the server side

however as people use JavaScript more

and more they noticed that it was

getting a bit complicated it couldn't do

ever since that a full-fledged

object-oriented programming language

should do that's why this made it hard

for JavaScript to be a Top Choice for

big business projects as a server side

tool and that's why the developers came

up with typescript to fix these gaps and

make JavaScript more suitable for big

projects and really big projects I mean

Enterprise level projects

so typescript or JavaScript Technologies

including programming languages change

every day so which one should you choose

as a developer who keeps up with the

times here is the thing guys decide in

which language is better or which one to

use is entirely up to you and depends on

the task or project you have to build

JavaScript is a fundamental scripting

language that remains a topic for many

developers because it's versatile has

lots of features and a big Community

it's great for small and middle sized

projects like making interactive

websites now if you have a big project

with lots of code typescript can be a

smarter Choice it's a newer language

with object-oriented programming

features generics and good support from

development tools it's designed for

complicated projects and can provide

what JavaScript just couldn't that's why

it's only up to you to decide which ones

use your project better

career opportunities

people I will tell you right away a

qualified JavaScript typescript

developer won't face any problems

looking for a job because JavaScript was

invented to make early websites more

interactive it's been getting more and

more popular ever since today it's the

most Wanted programming language out

there plus typescript which is like a

Spartan version of JavaScript is also

becoming popular typescript has been

getting more attention recently and some

new JavaScript tools like angular and

sjs are made using typescript too and

according to data JavaScript engineers

in the United States earn 120 000 per

year on average at the same time those

who know typescript can learn as much as

135 000 per year so as you can see there

is a difference between JS and GS

salaries but it's not a big one so guys

that's all about typescript javascripts

and their differences I also attach

Learning Materials related to these

programming languages in the description

down below let me know what you think

about this languages feel free to share

your experience in the comments don't

forget to like this video if you enjoy

my content and subscribe if you want to

see more videos like this think about it

until next time

foreign

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