Struct js_sys::Function [−][src]
#[repr(transparent)]pub struct Function { /* fields omitted */ }
Expand description
Implementations
The Function
constructor creates a new Function
object. Calling the
constructor directly can create functions dynamically, but suffers from
security and similar (but far less significant) performance issues
similar to eval
. However, unlike eval
, the Function
constructor
allows executing code in the global scope, prompting better programming
habits and allowing for more efficient code minification.
The Function
constructor creates a new Function
object. Calling the
constructor directly can create functions dynamically, but suffers from
security and similar (but far less significant) performance issues
similar to eval
. However, unlike eval
, the Function
constructor
allows executing code in the global scope, prompting better programming
habits and allowing for more efficient code minification.
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.
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.
The length property indicates the number of arguments expected by the function.
A Function object’s read-only name property indicates the function’s name as specified when it was created or “anonymous” for functions created anonymously.
The toString()
method returns a string representing the source code of the function.
Methods from Deref<Target = Object>
The constructor property returns a reference to the Object
constructor
function that created the instance object.
The hasOwnProperty()
method returns a boolean indicating whether the
object has the specified property as its own property (as opposed to
inheriting it).
The isPrototypeOf()
method checks if an object exists in another
object’s prototype chain.
The propertyIsEnumerable()
method returns a Boolean indicating
whether the specified property is enumerable.
The toLocaleString()
method returns a string representing the object.
This method is meant to be overridden by derived objects for
locale-specific purposes.
The toString()
method returns a string representing the object.
The valueOf()
method returns the primitive value of the
specified object.
Trait Implementations
Performs a dynamic instanceof
check to see whether the JsValue
provided is an instance of this type. Read more
Performs a dynamic check to see whether the JsValue
provided
is a value of this type. Read more
Performs a zero-cost unchecked conversion from a JsValue
into an
instance of Self
Read more
Performs a zero-cost unchecked conversion from a &JsValue
into an
instance of &Self
. Read more
Test whether this JS value has a type T
. Read more
Performs a dynamic cast (checked at runtime) of this value into the
target type T
. Read more
Performs a dynamic cast (checked at runtime) of this value into the
target type T
. Read more
Performs a zero-cost unchecked cast into the specified type. Read more
Performs a zero-cost unchecked cast into a reference to the specified type. Read more
Test whether this JS value is an instance of the type T
. Read more
type Abi = <JsValue as RefFromWasmAbi>::Abi
type Abi = <JsValue as RefFromWasmAbi>::Abi
The wasm ABI type references to Self
are recovered from.
type Anchor = ManuallyDrop<Function>
type Anchor = ManuallyDrop<Function>
The type that holds the reference to Self
for the duration of the
invocation of the function that has an &Self
parameter. This is
required to ensure that the lifetimes don’t persist beyond one function
call, and so that they remain anonymous. Read more
Recover a Self::Anchor
from Self::Abi
. Read more
Auto Trait Implementations
impl RefUnwindSafe for Function
impl UnwindSafe for Function
Blanket Implementations
Mutably borrows from an owned value. Read more
type Abi = <T as IntoWasmAbi>::Abi
type Abi = <T as IntoWasmAbi>::Abi
Same as IntoWasmAbi::Abi
Same as IntoWasmAbi::into_abi
, except that it may throw and never
return in the case of Err
. Read more