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One possible method could be to use the filter() method to create a new array of hashes that include only the hashes with values falling within the specified range.

Here is an example implementation:

let arrOfHashes = [{name: 'John', age: 25}, {name: 'Jane', age: 30}, {name: 'Bob', age: 20}, {name: 'Sara', age: 35}];

// Define the minimum and maximum ages of interest
let minAge = 25;
let maxAge = 30;

// Use the filter method to create a new array of hashes with ages in the specified range
let filteredArr = arrOfHashes.filter(item => item.age >= minAge && item.age <= maxAge);

// Print the filtered array to the console
console.log(filteredArr);

This code first defines an array of hashes arrOfHashes with name and age pairs. It then sets the minimum and maximum ages of interest. The filter() method is used on arrOfHashes to create a new array called filteredArr that includes only name and age pairs falling within the specified age range. Finally, the console.log() method is used to print the filtered array to the console for testing.