JSON class

JSON解析器

Available Extensions

• JSONGetOperations
• JSONSetOperations
• JSONToArray
• JSONToBool
• JSONToDouble
• JSONToInt
• JSONToMap
• JSONToNumber
• JSONToString

Constructors

JSON([dynamic _rawValue = const {}, JSONKey? _key])

创建一个新的JSON解析器 rawValue 解析的值 默认为空字典 key 关联上一个JSON的数据 用于在设置值的时候更新最顶层的JSON

Properties

hashCode → int

The hash code for this object.

no setter, inherited

rawValue → dynamic

解析的值

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

as<T>() → T?

exists() → bool

检测对应Key 的值是否存在

forEachList(void callback(int, JSON)) → void

循环读取List中的所有值

forEachMap(void callback(String, JSON)) → void

循环读取Map中的所有值

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

unwrap<S>() → Unwrap<S>

Operators

operator ==(Object other) → bool

The equality operator.

inherited

operator [](dynamic key) → JSON

通过key 获取下一个JSON 不存在则返回空的JSON

operator []=(dynamic key, dynamic value) → void

根据key 更新value key 关联的键 value 关联的值