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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
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.