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Editorial Team
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Asked: 2026-05-21T07:40:28+00:00

I know Object.defineProperty is lots of fun and a great replacement for __defineGetter__ and

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I know Object.defineProperty is lots of fun and a great replacement for __defineGetter__ and __defineSetter__ nonstandard APIs, but is there a similar counterpart for __lookupGetter__? Or some way of achieving a similar thing?

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  1. Editorial Team

    I’m not sure of the __lookupGetter__ semantics but ES5 provides a new API Object.getOwnPropertyDescriptor that gives you a descriptor object containing the attributes of a property and either its value or its get and/or set functions.

    eg.

    Object.getOwnPropertyDescriptor("foo", {get foo() { return 5} }).get

    Will give you the getter function

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