Packages

class Function extends Object

The Function constructor creates a new Function object. In JavaScript every function is actually a Function object.

Function objects created with the Function constructor are parsed when the function is created. This is less efficient than declaring a function and calling it within your code, because functions declared with the function statement are parsed with the rest of the code.

All arguments passed to the function are treated as the names of the identifiers of the parameters in the function to be created, in the order in which they are passed.

Note: Functions created with the Function constructor do not create closures to their creation contexts; they always are created in the global scope. When running them, they will only be able to access their own local variables and global ones, not the ones from the scope in which the Function constructor was called. This is different from using eval with code for a function expression.

Invoking the Function constructor as a function (without using the new operator) has the same effect as invoking it as a constructor.

MDN

Annotations
@RawJSType() @native() @JSGlobal()
Linear Supertypes
Object, Any, AnyRef, scala.Any
Known Subclasses
Function0, Function1, Function2, ThisFunction, ThisFunction0, ThisFunction1, ThisFunction2
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  2. By Inheritance
Inherited
  1. Function
  2. Object
  3. Any
  4. AnyRef
  5. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new Function(args: String*)

Value Members

  1. final def !=(arg0: scala.Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from Function to any2stringadd[Function] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (Function, B)
    Implicit
    This member is added by an implicit conversion from Function to ArrowAssoc[Function] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: scala.Any): Boolean
    Definition Classes
    AnyRef → Any
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def bind(thisArg: Any, argArray: Any*): Dynamic

    The bind() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

    The bind() method creates a new function that, when called, has its this keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.

    MDN

  8. def call(thisArg: Any, argArray: Any*): Dynamic

    The call() method calls a function with a given this value and arguments provided individually.

    The call() method calls a function with a given this value and arguments provided individually.

    You can assign a different this object when calling an existing function. this refers to the current object, the calling object. With call, you can write a method once and then inherit it in another object, without having to rewrite the method for the new object.

    apply is very similar to call(), except for the type of arguments it supports. You can use an arguments array instead of a named set of parameters. With apply, you can use an array literal, for example,

    fun.apply(this, ['eat', 'bananas'])

    or an Array object, for example,

    fun.apply(this, new Array('eat', 'bananas')).

    MDN

    Scala.js-specific note: call() can be used instead of the apply() method available in JavaScript. Simply use the :_* notation to expand a Seq as variadic arguments, e.g.,

    someFun.call(thisArg, argSeq: _*)
  9. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  10. def ensuring(cond: (Function) ⇒ Boolean, msg: ⇒ scala.Any): Function
    Implicit
    This member is added by an implicit conversion from Function to Ensuring[Function] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: (Function) ⇒ Boolean): Function
    Implicit
    This member is added by an implicit conversion from Function to Ensuring[Function] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. def ensuring(cond: Boolean, msg: ⇒ scala.Any): Function
    Implicit
    This member is added by an implicit conversion from Function to Ensuring[Function] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. def ensuring(cond: Boolean): Function
    Implicit
    This member is added by an implicit conversion from Function to Ensuring[Function] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  14. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  15. def equals(arg0: scala.Any): Boolean
    Definition Classes
    AnyRef → Any
  16. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  17. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from Function to StringFormat[Function] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  18. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  19. def hasOwnProperty(v: String): Boolean

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

    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.

    MDN

    Definition Classes
    Object
  20. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  21. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  22. def isPrototypeOf(v: Object): Boolean

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

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

    Definition Classes
    Object
  23. val length: Int

    length is a property of a function object, and indicates how many arguments the function expects, i.e.

    length is a property of a function object, and indicates how many arguments the function expects, i.e. the number of formal parameters. This number does not include the rest parameter. By contrast, arguments.length is local to a function and provides the number of arguments actually passed to the function.

    MDN

  24. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  25. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  26. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  27. 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.

    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.

    MDN

    Definition Classes
    Object
  28. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  29. def toLocaleString(): String
    Definition Classes
    Object
  30. def toString(): String
    Definition Classes
    AnyRef → Any
  31. def valueOf(): scala.Any
    Definition Classes
    Object
  32. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  33. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  34. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  35. def →[B](y: B): (Function, B)
    Implicit
    This member is added by an implicit conversion from Function to ArrowAssoc[Function] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from Object

Inherited from Any

Inherited from AnyRef

Inherited from scala.Any

Inherited by implicit conversion any2stringadd from Function to any2stringadd[Function]

Inherited by implicit conversion StringFormat from Function to StringFormat[Function]

Inherited by implicit conversion Ensuring from Function to Ensuring[Function]

Inherited by implicit conversion ArrowAssoc from Function to ArrowAssoc[Function]

Ungrouped