SOURCE

const debounce = (func, delay = 500) => {
    let timer = null;
    return function () {
        clearTimeout(timer)
        timer = setTimeout(() => {
            func.apply(this, arguments)
        }, delay)
    }
}

const pay = (money = 100) => {
    console.log('money:' + money)
}
const test = debounce(pay)
test(20)
test(30)
setTimeout(() => {
    test(40)
}, 1000)