JavaScript防抖与节流实现原理及代码示例

<button id="debounce">点我防抖！</button>
 
$('#debounce').on('click', debounce());
 
function debounce() {
    let timer;
    // 闭包
    return function () {
        clearTimeout(timer);
        timer = setTimeout(() => {
            // 需要防抖的操作...
            console.log("防抖成功！");
        }, 500);
    }
}

<button id="throttle">点我节流！</button>
 
$('#throttle').on('click', throttle());
 
function throttle(fn) {
    let flag = true;
    // 闭包
    return function () {
        if (!flag) {
            return;
        }
        flag = false;
        setTimeout(() => {
            console.log("节流成功！");
            flag = true;
        }, 1000);
    };
}