The static Reflect.apply() method calls a target function with arguments as specified.

Syntax

Reflect.apply(target, thisArgument, argumentsList)

Parameters

target
The target function to call.
thisArgument
The value of this provided for the call to target.
argumentsList
An array-like object specifying the arguments with which target should be called.

Return value

The result of calling the given target function with the specified this value and arguments.

Exceptions

A TypeError, if the target is not callable.

Description

In ES5, you typically use the Function.prototype.apply() method to call a function with a given this value and arguments provided as an array (or an array-like object).

Function.prototype.apply.call(Math.floor, undefined, [1.75]);

With Reflect.apply this becomes less verbose and easier to understand.

Examples

Using Reflect.apply()

Reflect.apply(Math.floor, undefined, [1.75]); 
// 1;

Reflect.apply(String.fromCharCode, undefined, [104, 101, 108, 108, 111]);
// "hello"

Reflect.apply(RegExp.prototype.exec, /ab/, ['confabulation']).index;
// 4

Reflect.apply(''.charAt, 'ponies', [3]);
// "i"

Specifications

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Reflect.apply' in that specification.
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
The definition of 'Reflect.apply' in that specification.
Draft  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support491242 No3610
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4949 Yes4236105.0

See also

Document Tags and Contributors

Last updated by: wbamberg,