Three simple steps
How to use this tool?
This free online converter translates TypeScript source code into JavaScript in three simple steps.
- Step 1
Add your TypeScript code
Type, paste, or upload the TypeScript code you want to translate.
- Step 2
Convert the code
Click Convert to translate the source code into JavaScript.
- Step 3
Review the result
Review, copy, or download the resulting JavaScript code from the output editor.
See it in action
Examples of TypeScript to JavaScript conversion
These examples show TypeScript source code and the corresponding JavaScript translation. Generated results can vary as AI models are updated.
Example 1
Is String Palindrome
Program that checks if a string is a palindrome or not.
TypeScript code
JavaScript code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
TypeScript code
JavaScript code
Language comparison
Key differences between TypeScript and JavaScript
| Characteristic | TypeScript | JavaScript |
|---|---|---|
| Syntax | TypeScript is a superset of JavaScript, so it has the same syntax as JavaScript with some additional features. | JavaScript has a simple and flexible syntax that is easy to learn and use. |
| Paradigm | TypeScript is an object-oriented programming language that supports both object-oriented and functional programming paradigms. | JavaScript is a multi-paradigm language that supports object-oriented, functional, and imperative programming paradigms. |
| Typing | TypeScript is a statically typed language that allows developers to define types for variables, functions, and objects. | JavaScript is a dynamically typed language that does not require developers to define types for variables, functions, and objects. |
| Performance | TypeScript can improve the performance of JavaScript applications by catching errors at compile-time and optimizing code at runtime. | JavaScript can be slower than TypeScript because it is interpreted at runtime and errors are caught at runtime. |
| Libraries and frameworks | TypeScript has access to all the libraries and frameworks available for JavaScript, as well as its own set of libraries and frameworks. | JavaScript has a vast ecosystem of libraries and frameworks that are widely used and supported. |
| Community and support | TypeScript has a growing community of developers and is supported by Microsoft. | JavaScript has a large and active community of developers and is supported by all major web browsers. |
| Learning curve | TypeScript has a steeper learning curve than JavaScript because it requires developers to learn new concepts such as types and interfaces. | JavaScript has a relatively low learning curve and is easy to get started with. |
Common questions
Frequently Asked Questions
How do I convert TypeScript to JavaScript?
Paste your TypeScript code into the input box, confirm the languages are set to TypeScript and JavaScript, and click Convert. CodeConvert AI analyzes your TypeScript code and generates equivalent JavaScript code in seconds, preserving the original logic and structure.
What are the main differences between TypeScript and JavaScript?
TypeScript and JavaScript differ in syntax, type system, standard libraries, and common idioms, so copying code line for line usually will not compile. The converter maps each TypeScript construct to its closest JavaScript equivalent. See the comparison table below for the key differences between TypeScript and JavaScript.
Is the converted JavaScript code accurate?
The AI produces high-quality JavaScript code that preserves the behavior of your original TypeScript code and follows JavaScript conventions. It handles common patterns, data structures, and idioms for both TypeScript and JavaScript. For large or performance-critical code, review and test the JavaScript output before using it in production.
Can I convert an entire TypeScript project to JavaScript?
You can convert TypeScript files one at a time by pasting each file's code. For a full migration, convert each file and then review how classes, dependencies, and project structure map from TypeScript to JavaScript. Signing in for free raises the input limit to 25,000 characters per conversion for larger files.
Can I convert JavaScript back to TypeScript?
Yes. CodeConvert AI converts in both directions, so you can convert JavaScript to TypeScript just as easily using our JavaScript to TypeScript converter. Try the JavaScript to TypeScript Converter
Is the TypeScript to JavaScript converter free, and do I need to install anything?
Yes, it is free and runs in your browser with nothing to install and no IDE extension required. You can convert TypeScript to JavaScript without an account for up to 2 conversions per day. Sign in for free for higher limits.
What are the benefits of signing in?
Signing in unlocks CodeConvert AI's Pro converter with more powerful AI models, a built-in chat assistant, code execution, saved conversion history, and personal notes. Every free account includes 5 credits and supports up to 25,000 characters of input per conversion, with no credit card required.
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