We can create an object using object literal syntax: let person = `) Ĭonsole.log(hello('Trevor')) // prints "Hello Trevor"Ĭonsole.log(hello('Ginni')) // prints "Hello Ginni"Ĭonsole.log(hi('Spencer')) // prints "Hi Spencer"Ĭonsole.log(hi('Grace')) // prints "Hi Grace" Some developers may even use these terms regarding JavaScript objects, but it's better to use the correct name: objects.Īn object's keys are strings or symbols, but the values can be any type, including other objects. Other languages have similar key-value data structures, but they may use different names like dictionaries, associative arrays, maps, and hashes.
Contrast this with arrays, which associate values with ordered indexes. Objects store a collection of key-value pairs: each item in the collection has a name that we call the key and an associated value. For now, we'll discuss objects as complex data structures, similar to arrays. JavaScript objects support this paradigm, but we won't need it in this book. Object Oriented Programming is a programming paradigm that centers around modeling problems as objects that have behavior (they perform actions) and state (they have characteristics that distinguish between different objects).
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