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let Object.prototype.hasOwnProperty() to the rescue
if (obj.hasOwnProperty('a')) { }
Yeah, thanks for mentioning this method. But using hasOwnProperty will console.log different result in the post's example, so use it with caution.
hasOwnProperty
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let Object.prototype.hasOwnProperty() to the rescue
Yeah, thanks for mentioning this method. But using
hasOwnPropertywill console.log different result in the post's example, so use it with caution.