JavaScript Reflect ownKeys() Method

JaScript Reflect.ownKeys() method in Javascript is used to return an array of the target object's own property keys and it ignores the inherited properties.

Syntax:

Reflect.ownKeys( obj )

Parameters: This method accepts a single parameter as mentioned above and described below:

• Obj: This parameter holds the target object and it is used to get its own keys.

Return value: This method always returns the Array of the target object's own property keys.

Exceptions: A TypeError is an exception given as the result when the target is not an Object.

Below examples illustrate the Reflect.ownKeys() method in JavaScript:

Example 1: In this example, we will return the keys of the object using the Reflect.ownKeys() method in JavaScript.

Output:

[ 'property1', 'property2' ]
[ 'length' ]
[ 'ab', 'bc' ]
[ 'ab', 'bc', 'ca' ]
[ 'ab', 'bc', 'ca' ]

Example 2: In this example, we will return the keys of the object using the Reflect.ownKeys() method in JavaScript.

Output:

[ 'z', 'y', 'x' ]
[ 'length' ]
[
 '34',
 '45',
 'val',
 'sdf',
 'safss',
 'val2',
 Symbol(comet),
 Symbol(meteor)
]
[]
[ 'hoo' ]

Supported Browsers: The browsers supported by JavaScript Reflect.ownKeys() method are listed below:

• Google Chrome 49 and above
• Edge 12 and above
• Firefox 42 and above
• Opera 36 and above
• Safari 10 and above

We have a complete list of Javascript Reflects methods, to check those go through the JavaScript Reflect Reference article.