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# Objects
As we know from the chapter <info:types>, there are seven data types in JavaScript. Six of them are called "primitive", because their values contain only a single thing (be it a string or a number or whatever).
As we know from the chapter <info:types>, there are eight data types in JavaScript. Seven of them are called "primitive", because their values contain only a single thing (be it a string or a number or whatever).
In contrast, objects are used to store keyed collections of various data and more complex entities. In JavaScript, objects penetrate almost every aspect of the language. So we must understand them first before going in-depth anywhere else.