JSONArrays

JSONArrays are a construct in the JSON data format that represents an ordered collection of values. They are encoded using square brackets, with elements separated by commas.

Elements may be any valid JSON type, including objects, other arrays, strings, numbers, booleans, or null. The order of elements is preserved, and each element is accessible by a zero-based index. An array may be empty.

JSON arrays are commonly used in data interchange and are typically parsed into native list or array structures by programming languages. In JavaScript, parsing a JSON array yields a native array object, and languages provide methods to append, remove, or iterate over elements. Example: [1, "apple", {"id":1}, [2,3], true, null].

JSON syntax rules relevant to arrays include that strings must be enclosed in double quotes, trailing commas are not allowed, and a value in the array must be a valid JSON value, which can also be nested arrays.

Validation, schemas, and performance: JSON Schema supports array-specific constraints such as items, minItems, maxItems, and uniqueItems. Large arrays may require streaming or incremental parsing to reduce memory usage. Arrays differ from JSON objects, which are unordered collections of key-value pairs; arrays provide order and index-based access.