📋 JSON Formatter

JSON (JavaScript Object Notation) Syntax: Data Types: • String: "text" (must use double quotes) • Number: 42, 3.14, -10, 1.2e-3 • Boolean: true, false • null: null • Object: {"key": "value"} • Array: [1, 2, 3] Objects: { "name": "John Doe", "age": 30, "isActive": true, "address": { "street": "123 Main St", "city": "New York" }, "hobbies": ["reading", "coding"] } Arrays: [ {"id": 1, "name": "Alice"}, {"id": 2, "name": "Bob"}, {"id": 3, "name": "Charlie"} ] Common Errors: • Trailing commas: {"a": 1,} ❌ • Single quotes: {'a': 1} ❌ • Unquoted keys: {a: 1} ❌ • Comments: // not allowed ❌ • Undefined: undefined ❌ JSON Path Syntax: • $ - Root element • .key - Child element • ['key'] - Child element (bracket notation) • [n] - Array index • [*] - All array elements • .. - Recursive descent • [?(@.key)] - Filter expression Examples: • $.store.book[0].title • $..author • $.store.book[*].author • $..book[?(@.price < 10)] • $.store.book[0,1] Best Practices: • Use consistent indentation (2 or 4 spaces) • Keep objects flat when possible • Use meaningful key names • Validate JSON before use • Consider schema validation • Use arrays for ordered data • Use objects for key-value pairs