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Reflect.deleteProperty

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

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

Browser compatibilityUpdate compatibility data on GitHub

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

See also

© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Reflect/deleteProperty