or you can check first with .hasOwnProperty() or with the *in* operator | Hacker News

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the8472 on March 10, 2015 | parent | context | favorite | on: Strengthening JavaScript

or you can check first with .hasOwnProperty() or with the in operator

masswerk on March 11, 2015 [–]

if the client supports .hasOwnProperty() or the 'in' operator ...

(it's just a few years that these were not common, and there are still clients around that don't support it)

Too on March 11, 2015 | [–]

Got any examples of these browsers? IIRC i used hasOwnProperty as far back as IE6.

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