how to check if object has key javascript

100

how to check if object has key javascript - 

myObj.hasOwnProperty('key') // it checks object for particular key and not on prototype

typescript check if object has key - 

if ('key' in myObj)

check if a key exists in an object javascript - 

"key" in obj // true, regardless of the actual value

check object has key javascript - 

Object.prototype.hasOwnProperty()

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