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

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Une Bévue wrote:

> 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.

_latter_
 
> 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 ?

It is unclear what you are asking.  However, if you want a reference to an 
object that does not inherit any properties, use

  var obj = Object.create(null);

If this method is implemented as specified, you do not have to use 
obj.hasOwnProperty() when iterating over the object's properties with a for-
in statement.

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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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