JSONPath is an expression language for querying, filtering, and extracting nodes from JSON structures, codified under IETF RFC 9535.
1. Core Operators Syntax
| Operator | Syntax | Description |
|---|---|---|
| Root object | $ | The root context object or array |
| Child operator | . or [] | Access named property or array index |
| Recursive descent | .. | Search across all nested depths |
| Wildcard | * | Matches all elements or properties |
| Array slice | [start:end:step] | Subarray slicing |
| Filter expression | [?(@.price < 20)] | Predicate filtering on current node |
2. Real-World Query Examples
// Extract all author names across any depth
$.store.book[*].author
// Filter all items where price is greater than 10
$..book[?(@.price > 10)]
// Retrieve the last two elements of an array
$.orders[-2:]
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