JSContext class

A JavaScript execution context. Holds the global object and other execution state.

Implemented types

• Finalizable

Mixed-in types

• AutoDisposeFinalizer

Implementers

• JSGlobalContext

Constructors

JSContext.new(JSContextRef _ref, {bool autoDispose = true})

Properties

globalContext → JSGlobalContext

Gets the global context of a JavaScript execution context. @result (JSGlobalContext) ctx's global context.

no setter

globalObject → JSObject

Gets the global object of a JavaScript execution context. @result (JSObject) ctx's global object.

no setter

group → JSContextGroup

Gets the context group to which a JavaScript execution context belongs. @result (JSContextGroup) ctx's group.

no setter

hashCode → int

The hash code for this object.

no setter, override

nativeFinalizer ↔ NativeFinalizer?

dart 对象回收器

getter/setter pair, inherited

ref → JSContextRef

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

attach(Pointer<NativeFinalizerFunction> callback, Pointer<Void> token, {bool autoDispose = true, Object? detach, int? externalSize}) → dynamic

将引擎持有的指针和 dart 对象回收器绑定。确保 dart 对象销毁的时候，释放引擎持有的指针和资源

inherited

checkScriptSyntax(String script, {String? sourceURL, int startingLineNumber = 1}) → bool

detach() → dynamic

将引擎持有的指针和资源释放

inherited

evaluate(String script, {JSObject? thisObject, String? sourceURL, int startingLineNumber = 1}) → JSValue

Evaluates a string of JavaScript. script (String) A JSString containing the script to evaluate. thisObject (JSObject) The object to use as "this," or NULL to use the global object as "this." sourceURL (String) A JSString containing a URL for the script's source file. This is used by debuggers and when reporting exceptions. Pass NULL if you do not care to include source file information. startingLineNumber (int) An integer value specifying the script's starting line number in the file located at sourceURL. This is only used when reporting exceptions. The value is one-based, so the first line is line 1 and invalid values are clamped to 1. @result (JSValueRef) The JSValue that results from evaluating script, or NULL if an exception is thrown.

gc() → void

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override