编辑代码

function debounce(fn, time) {
    const timer = null;
    return function() {
        const context = this;
        const args = arguments;
        clearTimeout(timer);
        timer = setTimeout(() => {
            fn.apply(this, args);
        }, time)
    }
}

function throttle(fn, time) {
    let isValid = false;
    return function() {
        const context = this;
        const args = arguments;
        if (!isValid) {
            fn.apply(this, arguments);
            isValid = true;
            setTimeout(() => {
                isValid = false;
            }, time)
        }
    }
}