In JavaScript, filtering and modifying elements in an array can be efficiently done using the combination of filter and map methods or using reduce method.
By utilizing the filter and map methods together, we can seamlessly filter out entries while also transforming the structure of the remaining elements in a clean, readable manner.
The reduce method serves as a powerful alternative by allowing you to accomplish both filtering and transformation in a single iteration, enhancing performance and code clarity.
For instance, by filtering out entries based on age and transforming the structure, you can easily manipulate data arrays to fit specific needs using these methods.
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