How to loop over objects in javascript

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in javascript, looping over objects is a common task that allows developers to access and manipulate object properties. there are several methods to iterate through an object's properties. the most straightforward approach is using a `for...in` loop, which iterates over all enumerable properties of an object. however, it's important to check if the property belongs to the object itself and not its prototype chain using the `hasownproperty` method.

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