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sorting an array of objects in javascript by a specific key is a common operation when working with data. the `sort()` method in javascript can be used to achieve this. the `sort()` method sorts the elements of an array in place and returns the sorted array.

here is a step-by-step tutorial on how to sort an array of objects by a specific key:

1. define an array of objects:


2. call the `sort()` method on the array and pass a compare function as an argument. the compare function should return a negative value if the first object should come before the second object, a positive value if the first object should come after the second object, or zero if the objects are equal based on the key you want to sort by. in this example, we will sort the array of objects by the `age` key in ascending order:


3. after sorting, the `students` array will be sorted by the `age` key in ascending order:


you can customize the sorting logic based on different keys and in ascending or descending order by adjusting the compare function accordingly.

here is a complete example that sorts an array of objects by the `name` key in descending order:


this example demonstrates how you can sort an array of objects by a specific key using the `sort()` method in javascript.

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