when have we to use obj.hasOwnProperty(key) ?

From	Une Bévue <unbewusst.sein@fai.invalid>
Newsgroups	comp.lang.javascript
Subject	when have we to use obj.hasOwnProperty(key) ?
Date	2014-10-21 12:06 +0200
Organization	Posted through ALPHANET (http://www.alphanet.ch/)
Message-ID	<m25b7r$554$1@shakotay.alphanet.ch> (permalink)

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I'm using something like :

var obj = {};
obj.foo = 'bar';

If I look at this object in the wrowser inspector I see :

Object
   foo: 'bar'
   __PROTO__ : Object

the later with a lot of methods.

For the time being I never have a prob with unwanted properties, but I 
wonder if...

Because this object is send to a websocket server by Json and then 
included in MongoDB database.

Then does I have to filter out this object or not ?

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Thread

when have we to use obj.hasOwnProperty(key) ? Une Bévue <unbewusst.sein@fai.invalid> - 2014-10-21 12:06 +0200
  Re: when have we to use obj.hasOwnProperty(key) ? Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-10-21 13:21 -0200
    Re: when have we to use obj.hasOwnProperty(key) ? Une Bévue <unbewusst.sein@fai.invalid> - 2014-10-21 17:26 +0200
  Re: when have we to use obj.hasOwnProperty(key) ? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-10-21 19:27 +0200
    Re: when have we to use obj.hasOwnProperty(key) ? Une Bévue <unbewusst.sein@fai.invalid> - 2014-10-22 10:22 +0200

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