Scala.js 1.1.0 - scala.scalajs.js.Object

final def !=(arg0: scala.Any): Boolean

Definition Classes: AnyRef → Any

final def ##(): Int

Definition Classes: AnyRef → Any

final def ==(arg0: scala.Any): Boolean

Definition Classes: AnyRef → Any

def apply(value: scala.Any): Object

def apply(): Object

final def asInstanceOf[T0]: T0

Definition Classes: Any

def assign(t: Object, s: Object*): Object

ECMAScript 6 The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object.

ECMAScript 6 The Object.assign() method is used to copy the values of all enumerable own properties from one or more source objects to a target object. It will return the target object.

Properties in the target object will be overwritten by properties in the sources if they have the same key. Later sources' properties will similarly overwrite earlier ones.

The Object.assign() method only copies enumerable and own properties from a source object to a target object. It uses Get on the source and Set on the target, so it will invoke getters and setters. Therefore it assigns properties versus just copying or defining new properties. This may make it unsuitable for merging new properties into a prototype if the merge sources contain getters. For copying property definitions, including their enumerability, into prototypes Object.getOwnPropertyDescriptor() and Object.defineProperty() should be used instead.

Both String and Symbol properties are copied.

In case of an error, for example if a property is non-writable, a TypeError will be raised, and the target object can be changed if any properties are added before error is raised.

Note that Object.assign() does not throw on null or undefined source values.

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def clone(): AnyRef

Attributes: protected[lang]
Definition Classes: AnyRef
Annotations: @throws( ... ) @native()

def create(o: Object): Object

def create(o: Object, properties: Any): Object

The Object.create() method creates a new object with the specified prototype object and properties.

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def defineProperties(o: Object, properties: Any): o.type

The Object.defineProperties() method defines new or modifies existing properties directly on an object, returning the object.

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def defineProperty(o: Object, p: String, attributes: PropertyDescriptor): o.type

The Object.defineProperty() method defines a new property directly on an object, or modifies an existing property on an object, and returns the object.

This method allows precise addition to or modification of a property on an object. Normal property addition through assignment creates properties which show up during property enumeration (for...in loop or Object.keys method), whose values may be changed, and which may be deleted. This method allows these extra details to be changed from their defaults.

Property descriptors present in objects come in two main flavors: data descriptors and accessor descriptors. A data descriptor is a property that has a value, which may or may not be writable. An accessor descriptor is a property described by a getter-setter pair of functions. A descriptor must be one of these two flavors; it cannot be both.

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def entries[A](dict: Dictionary[A]): Array[Tuple2[String, A]]

ECMAScript 2017

def entries(o: Object): Array[Tuple2[String, scala.Any]]

ECMAScript 2017

The Object.entries() method returns an array of a given object's own enumerable string-keyed property [key, value] pairs, in the same order as that provided by a for...in loop (the difference being that a for-in loop enumerates properties in the prototype chain as well).

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final def eq(arg0: AnyRef): Boolean

Definition Classes: AnyRef

def equals(arg0: scala.Any): Boolean

Definition Classes: AnyRef → Any

def finalize(): Unit

Attributes: protected[lang]
Definition Classes: AnyRef
Annotations: @throws( classOf[java.lang.Throwable] )

def freeze(o: Object): o.type

The Object.freeze() method freezes an object: that is, prevents new properties from being added to it; prevents existing properties from being removed; and prevents existing properties, or their enumerability, configurability, or writability, from being changed.

The Object.freeze() method freezes an object: that is, prevents new properties from being added to it; prevents existing properties from being removed; and prevents existing properties, or their enumerability, configurability, or writability, from being changed. In essence the object is made effectively immutable. The method returns the object being frozen.

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def fromEntries[A](iterable: Iterable[Tuple2[String, A]]): Dictionary[A]

ECMAScript 2020

The Object.fromEntries() method transforms a list of key-value pairs into an object.

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final def getClass(): Class[_]

Definition Classes: AnyRef → Any
Annotations: @native()

def getOwnPropertyDescriptor(o: Object, p: String): PropertyDescriptor

The Object.getOwnPropertyDescriptor() method returns a property descriptor for an own property (that is, one directly present on an object, not present by dint of being along an object's prototype chain) of a given object.

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def getOwnPropertyNames(o: Object): Array[String]

Object.getOwnPropertyNames returns an array whose elements are strings corresponding to the enumerable and non-enumerable properties found directly upon obj.

Object.getOwnPropertyNames returns an array whose elements are strings corresponding to the enumerable and non-enumerable properties found directly upon obj. The ordering of the enumerable properties in the array is consistent with the ordering exposed by a for...in loop (or by Object.keys) over the properties of the object. The ordering of the non-enumerable properties in the array, and among the enumerable properties, is not defined.

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def getOwnPropertySymbols(o: Object): Array[Symbol]

ECMAScript 2015

The Object.getOwnPropertySymbols() method returns an array of all symbol properties found directly upon a given object.

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def getPrototypeOf(o: Object): Object

The Object.getPrototypeOf() method returns the prototype (i.e.

The Object.getPrototypeOf() method returns the prototype (i.e. the internal Prototype) of the specified object.

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def hasOwnProperty(v: String): Boolean

Tests whether this object has the specified property as a direct property.

Unlike js.Object.hasProperty, this method does not check down the object's prototype chain.

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Definition Classes: Object

def hashCode(): Int

Definition Classes: AnyRef → Any
Annotations: @native()

def is(value1: scala.Any, value2: scala.Any): Boolean

ECMAScript 2015

Object.is() determines whether two values are the same value. Two values are the same if one of the following holds:

both undefined
both null
both true or both false
both strings of the same length with the same characters in the same order
both the same object (means both object have same reference)
both numbers and
both +0
both -0
both NaN
or both non-zero and both not NaN and both have the same value

This is not the same as being equal according to JavaScript's === operator (exposed as js.special.strictEquals in Scala.js). The ===operator treats the number values-0 and +0 as equal and treats NaNas not equal toNaN.

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def isExtensible(o: Object): Boolean

Determines if extending of an object is allowed

Objects are extensible by default: they can have new properties added to them, and (in engines that support proto their proto property) can be modified. An object can be marked as non-extensible using Object.preventExtensions, Object.seal, or Object.freeze

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def isFrozen(o: Object): Boolean

The Object.isFrozen() determines if an object is frozen.

An object is frozen if and only if it is not extensible, all its properties are non-configurable, and all its data properties (that is, properties which are not accessor properties with getter or setter components) are non-writable.

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final def isInstanceOf[T0]: Boolean

Definition Classes: Any

def isPrototypeOf(v: Object): Boolean

Tests whether this object is in the prototype chain of another object.

Definition Classes: Object

def isSealed(o: Object): Boolean

Returns true if the object is sealed, otherwise false.

Returns true if the object is sealed, otherwise false. An object is sealed if it is not extensible and if all its properties are non-configurable and therefore not removable (but not necessarily non-writable).

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def keys(o: Object): Array[String]

The Object.keys() method returns an array of a given object's own enumerable properties, in the same order as that provided by a for...in loop (the difference being that a for-in loop enumerates properties in the prototype chain as well).

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final def ne(arg0: AnyRef): Boolean

Definition Classes: AnyRef

final def notify(): Unit

Definition Classes: AnyRef
Annotations: @native()

final def notifyAll(): Unit

Definition Classes: AnyRef
Annotations: @native()

def preventExtensions(o: Object): o.type

The Object.preventExtensions() method prevents new properties from ever being added to an object (i.e.

The Object.preventExtensions() method prevents new properties from ever being added to an object (i.e. prevents future extensions to the object).

An object is extensible if new properties can be added to it. preventExtensions marks an object as no longer extensible, so that it will never have properties beyond the ones it had at the time it was marked as non-extensible. Note that the properties of a non-extensible object, in general, may still be deleted. Attempting to add new properties to a non-extensible object will fail, either silently or by throwing a TypeError (most commonly, but not exclusively, when in strict mode).

Object.preventExtensions only prevents addition of own properties. Properties can still be added to the object prototype. However, calling Object.preventExtensions on an object will also prevent extensions on its proto property.

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def propertyIsEnumerable(v: String): Boolean

Tests whether the specified property in an object can be enumerated by a call to js.Object.properties, with the exception of properties inherited through the prototype chain.

If the object does not have the specified property, this method returns false.

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Definition Classes: Object

def seal(o: Object): o.type

The Object.seal() method seals an object, preventing new properties from being added to it and marking all existing properties as non-configurable.

The Object.seal() method seals an object, preventing new properties from being added to it and marking all existing properties as non-configurable. Values of present properties can still be changed as long as they are writable.

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final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes: AnyRef

def toLocaleString(): String

Definition Classes: Object

def toString(): String

Definition Classes: AnyRef → Any

def valueOf(): scala.Any

Definition Classes: Object

final def wait(): Unit

Definition Classes: AnyRef
Annotations: @throws( ... )

final def wait(arg0: Long, arg1: Int): Unit

Definition Classes: AnyRef
Annotations: @throws( ... )

final def wait(arg0: Long): Unit

Definition Classes: AnyRef
Annotations: @throws( ... ) @native()

Packages

Guide

Overview

Object

Companion class Object

object Object extends Object

Value Members

Inherited from Object

Inherited from Any

Inherited from AnyRef

Inherited from scala.Any

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