string-filter

'string-filter' is a function that filters characters in a string based on their character codes, keeping only characters within a specified range.

Installation

npm install string-filter

Usage

const filter = require('your-package-name');

const input = "Hello, World!";

// Filter uppercase letters (A-Z)
console.log(filter(input, 65, 90)); 
// Output: "HW"

// Filter lowercase letters (a-z)
console.log(filter(input, 97, 122)); 
// Output: "elloworld"

// Filter uppercase letters and reverse the result
console.log(filter(input, 65, 90, { reverse: true })); 
// Output: "WH"

// Case-insensitive filtering (treat input as uppercase)
console.log(filter(input, 65, 90, { caseInsensitive: true }));
// Output: "HW"