Web/JavaScript/Reference/Global objects/Reflect/deleteProperty

The static Reflect.deleteProperty() method allows to delete properties. It is like the delete operator as a function.

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Syntax

Reflect.deleteProperty(target, propertyKey)

Parameters

target

The target object on which to delete the property.

propertyKey

The name of the property to be deleted.

Return value

A Boolean indicating whether or not the property was successfully deleted.

Exceptions

A TypeError, if target is not an Object.

Description

The Reflect.deleteProperty method allows you to delete a property on an object. It returns a Boolean indicating whether or not the property was successfully deleted. It is almost identical to the non-strict delete operator.

Examples

Using Reflect.deleteProperty()

let obj = { x: 1, y: 2 }
Reflect.deleteProperty(obj, 'x')  // true
obj                               // { y: 2 }

let arr = [1, 2, 3, 4, 5]
Reflect.deleteProperty(arr, '3')  // true
arr                               // [1, 2, 3, undefined, 5]

// Returns true if no such property exists
Reflect.deleteProperty({}, 'foo')  // true

// Returns false if a property is unconfigurable
Reflect.deleteProperty(Object.freeze({foo: 1}), 'foo')  // false

Specifications

Specification

ECMAScript (ECMA-262)The definition of 'Reflect.deleteProperty' in that specification.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
deleteProperty	Chrome Full support 49	Edge Full support 12	Firefox Full support 42	IE No support No	Opera Full support 36	Safari Full support 10	WebView Android Full support 49	Chrome Android Full support 49	Firefox Android Full support 42	Opera Android Full support 36	Safari iOS Full support 10	Samsung Internet Android Full support 5.0	nodejs Full support 6.0.0

Legend

Full support  

Full support

No support  

No support

See also

• Reflect
• delete operator

Reflect.deleteProperty() by Mozilla Contributors is licensed under CC-BY-SA 2.5.