JSValue Class

Definition

Namespace:

JavaScriptCore

Assembly:

Xamarin.iOS.dll

Holds a JavaScript value and provides type-testing and conversion functions.

[Foundation.Register("JSValue", true)]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.MacOSX, 10, 9, ObjCRuntime.PlatformArchitecture.Arch64, null)]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 7, 0, ObjCRuntime.PlatformArchitecture.All, null)]
public class JSValue : Foundation.NSObject

type JSValue = class
    inherit NSObject

Inheritance

Object

NSObject

JSValue

Attributes

RegisterAttribute IntroducedAttribute

Constructors

JSValue(IntPtr)	A constructor used when creating managed representations of unmanaged objects; Called by the runtime.
JSValue(NSObjectFlag)	Constructor to call on derived classes to skip initialization and merely allocate the object.

Properties

Class	(Inherited from NSObject)
ClassHandle	The handle for this class.
Context	Gets the host JS context.
DebugDescription	A developer-meaningful description of this object. (Inherited from NSObject)
Description	Description of the object, the Objective-C version of ToString. (Inherited from NSObject)
Handle	Handle (pointer) to the unmanaged object representation. (Inherited from NSObject)
IsArray	Gets a Boolean value that tells whether the JSValue represents a JavaScript array.
IsBoolean	Gets a Boolean value that tells whether the JSValue represents a JavaScript Boolean.
IsDate	Gets a Boolean value that tells whether the JSValue represents a JavaScript Date.
IsDirectBinding	(Inherited from NSObject)
IsNull	Gets a Boolean value that tells whether the JSValue represents a JavaScript null.
IsNumber	Gets a Boolean value that tells whether the JSValue represents a JavaScript number.
IsObject	Gets a Boolean value that tells whether the JSValue represents a JavaScript object.
IsProxy	(Inherited from NSObject)
IsString	Gets a Boolean value that tells whether the JSValue represents a JavaScript string.
IsUndefined	Gets a Boolean value that tells whether the JSValue represents a JavaScript undefined value.
Item[NSObject]	Gets or sets the item that is indexed by the provided key.
Item[nuint]	Gets or sets the item that is indexed by the provided index.
JSValueRefPtr	Gets the C equivalent of the JSValue.
RetainCount	Returns the current Objective-C retain count for the object. (Inherited from NSObject)
Self	(Inherited from NSObject)
Superclass	(Inherited from NSObject)
SuperHandle	Handle used to represent the methods in the base class for this NSObject. (Inherited from NSObject)
Zone	(Inherited from NSObject)

Methods

AddObserver(NSObject, NSString, NSKeyValueObservingOptions, IntPtr)	Registers an object for being observed externally (using NSString keyPath).   Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject)
AddObserver(NSObject, String, NSKeyValueObservingOptions, IntPtr)	Registers an object for being observed externally (using string keyPath).   Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject)
AddObserver(NSString, NSKeyValueObservingOptions, Action<NSObservedChange>)	Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject)
AddObserver(String, NSKeyValueObservingOptions, Action<NSObservedChange>)	Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject)
AwakeFromNib()	Called after the object has been loaded from the nib file. Overriders must call base.AwakeFromNib(). (Inherited from NSObject)
BeginInvokeOnMainThread(Action)	(Inherited from NSObject)
BeginInvokeOnMainThread(Selector, NSObject)	Invokes asynchrously the specified code on the main UI thread. (Inherited from NSObject)
Bind(NSString, NSObject, String, NSDictionary)	(Inherited from NSObject)
Bind(String, NSObject, String, NSDictionary)	(Inherited from NSObject)
BindingInfo(String)	(Inherited from NSObject)
BindingOptionDescriptions(String)	(Inherited from NSObject)
BindingValueClass(String)	(Inherited from NSObject)
Call(JSValue[])	Calls a list of values as a javascript function.
CommitEditing()	(Inherited from NSObject)
CommitEditing(NSObject, Selector, IntPtr)	(Inherited from NSObject)
ConformsToProtocol(IntPtr)	Invoked to determine if this object implements the specified protocol. (Inherited from NSObject)
Construct(JSValue[])	Calls a list of values as a javascript constructor.
Copy()	Performs a copy of the underlying Objective-C object. (Inherited from NSObject)
CreateArray(JSContext)	Creates an empty array in the provided context.
CreateError(String, JSContext)	Creates an error with the provided message, in the provided context.
CreateObject(JSContext)	Creates an empty object in the provided context.
CreateRegularExpression(String, String, JSContext)	Creates a regular expression in the provided context, with the specified values.
DangerousAutorelease()	(Inherited from NSObject)
DangerousRelease()	(Inherited from NSObject)
DangerousRetain()	(Inherited from NSObject)
DefineProperty(String, NSObject)	Defines property, or modifies its definition if it already exists.
DeleteProperty(String)	Deletes the specifed property.
DidChange(NSKeyValueChange, NSIndexSet, NSString)	Indicates a change occurred to the indexes for a to-many relationship. (Inherited from NSObject)
DidChange(NSString, NSKeyValueSetMutationKind, NSSet)	(Inherited from NSObject)
DidChangeValue(String)	Indicates that a change occurred on the specified key. (Inherited from NSObject)
Dispose()	Releases the resources used by the NSObject object. (Inherited from NSObject)
Dispose(Boolean)	Releases the resources used by the NSObject object. (Inherited from NSObject)
DoesNotRecognizeSelector(Selector)	Indicates that this object does not recognize the specified selector. (Inherited from NSObject)
Equals(NSObject)	(Inherited from NSObject)
Equals(Object)	(Inherited from NSObject)
ExposedBindings()	(Inherited from NSObject)
From(Boolean, JSContext)	Creates a JavaScript Boolean value from the provide Boolean value.
From(CGPoint, JSContext)
From(CGRect, JSContext)
From(CGSize, JSContext)
From(Double, JSContext)	Creates a JavaScript double from the provided double value.
From(Int32, JSContext)	Creates a JavaScript integer for the provided ivalue.
From(NSObject, JSContext)	Converts value into a JavaScript object in the specified context.
From(NSRange, JSContext)	Creates a JavaScript object with length and range properties that are derived from the provided range.
From(String, JSContext)	Creates a JavaScript string from the provided string.
From(UInt32, JSContext)	Creates a JavaScript number that represents the provided 32-bit value.
FromJSJSValueRef(IntPtr, JSContext)	Creates a C representation of the provided JavaScript reference value.
GetBindingInfo(NSString)	(Inherited from NSObject)
GetBindingOptionDescriptions(NSString)	(Inherited from NSObject)
GetBindingValueClass(NSString)	(Inherited from NSObject)
GetDictionaryOfValuesFromKeys(NSString[])	Retrieves the values of the specified keys. (Inherited from NSObject)
GetHashCode()	Generates a hash code for the current instance. (Inherited from NSObject)
GetMethodForSelector(Selector)	(Inherited from NSObject)
GetNativeField(String)	Obsolete. (Inherited from NSObject)
GetNativeHash()	(Inherited from NSObject)
GetProperty(String)	Returns the value of the specified JavaScript property in this JSValue.
GetValueAt(nuint)	Returns the value at the specified index, or undefined if none exists.
HasProperty(String)	Returns true if this JSValue has the specified property.
Init()	(Inherited from NSObject)
InitializeHandle(IntPtr, String)	(Inherited from NSObject)
InitializeHandle(IntPtr)	(Inherited from NSObject)
Invoke(Action, Double)	(Inherited from NSObject)
Invoke(Action, TimeSpan)	(Inherited from NSObject)
Invoke(String, JSValue[])	Calls the specified method on the JSValue, with the specified arguments.
InvokeOnMainThread(Action)	(Inherited from NSObject)
InvokeOnMainThread(Selector, NSObject)	Invokes synchrously the specified code on the main UI thread. (Inherited from NSObject)
IsEqual(NSObject)	(Inherited from NSObject)
IsEqualTo(NSObject)	Returns a Boolean value that tells whether the JSValue is equal to the specified value.
IsEqualWithTypeCoercionTo(NSObject)	Returns a Boolean value that tells whether the JSValue is equal to the specified value after coercion.
IsInstanceOf(NSObject)	Returns a Boolean value that tells whether the JSValue is an instance of the specified type.
IsKindOfClass(Class)	(Inherited from NSObject)
IsMemberOfClass(Class)	(Inherited from NSObject)
MarkDirty()	Promotes a regular peer object (IsDirectBinding is true) into a toggleref object. (Inherited from NSObject)
MutableCopy()	Creates a mutable copy of the specified NSObject. (Inherited from NSObject)
Null(JSContext)	Creates and returns a null value.
ObjectDidEndEditing(NSObject)	(Inherited from NSObject)
ObserveValue(NSString, NSObject, NSDictionary, IntPtr)	Indicates that the value at the specified keyPath relative to this object has changed. (Inherited from NSObject)
PerformSelector(Selector, NSObject, Double, NSString[])	(Inherited from NSObject)
PerformSelector(Selector, NSObject, Double)	Invokes the selector on the current instance and if the obj is not null, it passes this as its single parameter. (Inherited from NSObject)
PerformSelector(Selector, NSObject, NSObject)	(Inherited from NSObject)
PerformSelector(Selector, NSObject)	(Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean, NSString[])	(Inherited from NSObject)
PerformSelector(Selector, NSThread, NSObject, Boolean)	(Inherited from NSObject)
PerformSelector(Selector)	(Inherited from NSObject)
PrepareForInterfaceBuilder()	(Inherited from NSObject)
RemoveObserver(NSObject, NSString, IntPtr)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject)
RemoveObserver(NSObject, NSString)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject)
RemoveObserver(NSObject, String, IntPtr)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject)
RemoveObserver(NSObject, String)	Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject)
RespondsToSelector(Selector)	Whether this object recognizes the specified selector. (Inherited from NSObject)
SetNativeField(String, NSObject)	Obsolete. (Inherited from NSObject)
SetNilValueForKey(NSString)	Sets the value of the specified key to null. (Inherited from NSObject)
SetProperty(NSObject, String)	Sets the specified property to the specified value.
SetValue(JSValue, nuint)	Sets the item at the specified index to the specified value.
SetValueForKey(NSObject, NSString)	Sets the value of the property specified by the key to the specified value. (Inherited from NSObject)
SetValueForKeyPath(IntPtr, NSString)	A constructor used when creating managed representations of unmanaged objects; Called by the runtime. (Inherited from NSObject)
SetValueForKeyPath(NSObject, NSString)	Sets the value of a property that can be reached using a keypath. (Inherited from NSObject)
SetValueForUndefinedKey(NSObject, NSString)	Indicates an attempt to write a value to an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject)
SetValuesForKeysWithDictionary(NSDictionary)	Sets the values of this NSObject to those in the specified dictionary. (Inherited from NSObject)
ToArray()	Returns an array of values for the JSValue.
ToBool()	Returns a bool for the JSValue.
ToDate()	Returns a date for the JSValue.
ToDictionary()	Returns a dictionary for the JSValue.
ToDouble()	Returns a double for the JSValue.
ToInt32()	Returns a System.Int32 for the JSValue.
ToNumber()	Returns an NSNumber for the JSValue.
ToObject()	Returns an NSObject for the JSValue.
ToObject(Class)	Returns an NSObject, of the specified class, for the JSValue.
ToPoint()	Returns a point for the JSValue.
ToRange()	Returns an NSRange for the JSValue.
ToRect()	Returns a rectangle for the JSValue.
ToSize()	Returns a size for the JSValue.
ToString()	Returns a string representation of the value of the current instance.
ToUInt32()	Returns a System.UInt32 for the JSValue.
Unbind(NSString)	(Inherited from NSObject)
Unbind(String)	(Inherited from NSObject)
Undefined(JSContext)	Returns a JavaScrip undefined value in the specified context.
ValueForKey(NSString)	Returns the value of the property associated with the specified key. (Inherited from NSObject)
ValueForKeyPath(NSString)	Returns the value of a property that can be reached using a keypath. (Inherited from NSObject)
ValueForUndefinedKey(NSString)	Indicates an attempt to read a value of an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject)
WillChange(NSKeyValueChange, NSIndexSet, NSString)	Indicates that the values of the specified indices in the specified key are about to change. (Inherited from NSObject)
WillChange(NSString, NSKeyValueSetMutationKind, NSSet)	(Inherited from NSObject)
WillChangeValue(String)	Indicates that the value of the specified key is about to change. (Inherited from NSObject)

Extension Methods

GetDebugDescription(INSObjectProtocol)
GetAccessibilityCustomRotors(NSObject)	Gets the array of UIAccessibilityCustomRotor objects appropriate for this object.
SetAccessibilityCustomRotors(NSObject, UIAccessibilityCustomRotor[])	Sets the array of UIAccessibilityCustomRotor objects appropriate for this object.

See also

• Apple documentation for JSValue