如何在javascript中重用具有不同变量的函数

function greet(name) {
    return `Hello, ${name}!`;
}

console.log(greet("Alice")); // 输出: Hello, Alice!
console.log(greet("Bob"));   // 输出: Hello, Bob!

function createCounter() {
    let count = 0;
    return function() {
        count++;
        return count;
    };
}

const counter1 = createCounter();
console.log(counter1()); // 输出: 1
console.log(counter1()); // 输出: 2

const counter2 = createCounter();
console.log(counter2()); // 输出: 1

function multiplyBy(factor) {
    return function(number) {
        return number * factor;
    };
}

const double = multiplyBy(2);
console.log(double(5)); // 输出: 10

const triple = multiplyBy(3);
console.log(triple(5)); // 输出: 15

function createUniqueCounter() {
    let count = 0;
    return function() {
        count++;
        return count;
    };
}

const counterA = createUniqueCounter();
const counterB = createUniqueCounter();
console.log(counterA()); // 输出: 1
console.log(counterA()); // 输出: 2
console.log(counterB()); // 输出: 1