May 2011
Intermediate to advanced
1096 pages
40h 54m
English
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Name
Object.getOwnPropertyNames() — return the names of non-inherited properties
Availability
ECMAScript 5
Synopsis
Object.getOwnPropertyNames(o)
Arguments
oAn object
Returns
An array that contains the names of all non-inherited
properties of o, including
non-enumerable properties.
Description
Object.getOwnPropertyNames() returns an
array that contains the names of all non-inherited properties of
o, including non-enumerable properties.
See Object.keys() for a function
that returns only the names of enumerable properties.
Note that this is not a method to be invoked on an object: it is a global function and you must pass an object to it.
Example
Object.getOwnPropertyNames([])// => ["length"]: "length" is non-enumerable
See Also
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.