Three simple steps
How to use this tool?
This free online converter translates COBOL source code into JavaScript in three simple steps.
- Step 1
Add your COBOL code
Type, paste, or upload the COBOL 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 COBOL to JavaScript conversion
These examples show COBOL 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.
COBOL code
JavaScript code
Example 2
Even or Odd
A well commented function to check if a number if odd or even.
COBOL code
JavaScript code
Language comparison
Key differences between COBOL and JavaScript
| Characteristic | COBOL | JavaScript |
|---|---|---|
| Syntax | COBOL has a verbose and English-like syntax. | JavaScript has a more concise and C-like syntax. |
| Paradigm | COBOL is primarily procedural and imperative. | JavaScript is a multi-paradigm language, supporting procedural, object-oriented, and functional programming. |
| Typing | COBOL is statically typed. | JavaScript is dynamically typed. |
| Performance | COBOL is known for its efficiency and performance in handling large-scale business applications. | JavaScript is generally faster for web-based applications but may not be as efficient for certain types of computations. |
| Libraries and frameworks | COBOL has a limited number of libraries and frameworks available compared to JavaScript. | JavaScript has a vast ecosystem of libraries and frameworks for various purposes. |
| Community and support | COBOL has a smaller and more specialized community compared to JavaScript. | JavaScript has a large and active community with extensive support resources. |
| Learning curve | COBOL has a steeper learning curve due to its verbose syntax and specialized use cases. | JavaScript has a relatively easier learning curve, especially for beginners, due to its popularity and extensive learning resources. |
Common questions
Frequently Asked Questions
How do I convert COBOL to JavaScript?
Paste your COBOL code into the input box, confirm the languages are set to COBOL and JavaScript, and click Convert. CodeConvert AI analyzes your COBOL code and generates equivalent JavaScript code in seconds, preserving the original logic and structure.
What are the main differences between COBOL and JavaScript?
COBOL 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 COBOL construct to its closest JavaScript equivalent. See the comparison table below for the key differences between COBOL and JavaScript.
Is the converted JavaScript code accurate?
The AI produces high-quality JavaScript code that preserves the behavior of your original COBOL code and follows JavaScript conventions. It handles common patterns, data structures, and idioms for both COBOL and JavaScript. For large or performance-critical code, review and test the JavaScript output before using it in production.
Can I convert an entire COBOL project to JavaScript?
You can convert COBOL 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 COBOL 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 COBOL?
Yes. CodeConvert AI converts in both directions, so you can convert JavaScript to COBOL just as easily using our JavaScript to COBOL converter. Try the JavaScript to COBOL Converter
Is the COBOL 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 COBOL 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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