In JavaScript, when using an array object, must the data types stored in each element be the same?

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In JavaScript, arrays are designed to hold collections of any type of data, which means that the data types stored in each element do not need to be the same. An array can contain a mix of primitive types like numbers and strings, as well as complex types like objects and other arrays. For instance, you could have an array that includes a number, a string, and a boolean value all in the same array without any issues.

This flexibility is one of the defining characteristics of JavaScript as a dynamically typed language. Unlike languages that enforce strict type consistency for arrays (such as Java or C#), JavaScript allows for a more fluid approach, enabling developers to create more versatile data structures. Thus, the correct understanding is that different data types can coexist within the same array, which aligns with the answer indicating that they can be different.