JSContext

Declaration

class JSContext

Overview

You create and use JavaScript contexts to evaluate JavaScript scripts from Objective-C or Swift code; to access values that JavaScript defines or calculates; and to make native objects, methods, or functions accessible to JavaScript.

Topics

Creating JavaScript contexts

• init()
• init(virtualMachine:)

Making JavaScript context inspectable

• isInspectable

Evaluating scripts

• evaluateScript(_:)
• evaluateScript(_:withSourceURL:)

Inspecting callback state in a running context

• current()
• currentCallee()
• currentThis()
• currentArguments()

Working with JavaScript global state

• globalObject
• exception
• exceptionHandler
• virtualMachine
• name

Accessing JavaScript global state with subscripts

• objectForKeyedSubscript(_:)
• setObject(_:forKeyedSubscript:)

Working with the C JavaScriptCore API

• jsGlobalContextRef
• init(JSGlobalContextRef:)

Initializers

• init(jsGlobalContextRef:)

Default Implementations

• JSContext Implementations

Relationships

Inherits From

• NSObject

Conforms To

• CVarArg
• CustomDebugStringConvertible
• CustomStringConvertible
• Equatable
• Hashable
• NSObjectProtocol

See Also

Execution Environment

• JSVirtualMachine