javascript, object value property

[kouty]

Hello.
My question is very basic but I can not find/understand the answer anywhere.
How check if the name-value "name": value in an object.
I know that with Object.keys() method we can checking the names of the properties.
I know too that with Object.name or Object["name"] we can see the value of the "named-name" property.
But if I have a singleton {"name": value} and want to check many large object for it, is it a direct method?
For example object 1 is {'a': 'lphabet', 'b': "cycle'} and I search 'a': 'bsurd'.
Tthank you in advance.