JSON to JS Object Converter Online

About JSON to JavaScript Object Converter

This free online JSON to JavaScript object converter transforms JSON data into JavaScript object syntax with customizable variable declarations and formatting options. All processing happens in your browser for maximum privacy and security.

Features

• JSON to JS Object Conversion: Convert JSON data to JavaScript object notation
• Smart Property Names: Remove unnecessary quotes around valid property names
• Variable Declarations: Generate const or let variable declarations with custom names
• Export Support: Add export statements for ES6 module compatibility
• Key Sorting: Alphabetically sort object keys for consistent output
• Custom Indentation: Control formatting with adjustable indentation (0-8 spaces)
• JSON Validation: Real-time JSON syntax validation with detailed error messages
• File Operations: Upload JSON files and download JavaScript results
• Copy & Download: Copy JS code to clipboard or save as .js files
• Privacy First: All processing happens locally in your browser

Conversion Options

• Variable Name: Customize the JavaScript variable name (default: "data")
• Declaration Type: Choose between const and let declarations
• Export Object: Add export statement for ES6 module usage
• Sort Keys: Alphabetically sort object properties for consistency
• Indentation: Control code formatting with customizable spacing

JSON vs JavaScript Object Differences

• Property Names: JavaScript allows unquoted property names, JSON requires quotes
• Data Types: JavaScript supports more data types than JSON
• Comments: JavaScript supports comments, JSON doesn't
• Functions: JavaScript objects can contain functions, JSON cannot
• Variable Assignment: JavaScript objects can be assigned to variables

Use Cases

• Configuration Files: Convert JSON config to JavaScript for dynamic configurations
• Data Initialization: Create JavaScript variables from JSON API responses
• Module Development: Generate exportable JavaScript objects from JSON data
• Code Generation: Automatically generate JavaScript object literals
• Testing: Create test data objects from JSON fixtures
• Documentation: Convert JSON examples to JavaScript code samples

Output Formats

• Const Declaration: const variableName = { ... }; (default)
• Let Declaration: let variableName = { ... }; (mutable)
• Exported Object: export const variableName = { ... }; (ES6 modules)
• Formatted Code: Properly indented and readable JavaScript syntax

JavaScript Object Features

• Unquoted Keys: Valid JavaScript identifiers don't need quotes
• Variable Assignment: Objects can be assigned to variables for reuse
• Module Export: Objects can be exported for use in other modules
• Dynamic Properties: Properties can be accessed and modified at runtime
• Method Addition: Functions can be added to objects after creation

Best Practices

• Use Const: Prefer const for immutable object references
• Descriptive Names: Use meaningful variable names for better code readability
• Consistent Formatting: Maintain consistent indentation across your codebase
• Export When Needed: Only export objects that will be used in other modules
• Sort Keys: Sort object keys for better diff comparisons and consistency