防抖
function debound(fn, wait) {
let time;
return function(...args) {
if(time) {
clearTimeOut(time)
}
time = setTimeOut(() => {
fn.apply(this, args)
}, wait)
}
}
节流
节流的意思 是在单位时间内只执行一次
function throttle(fn, wait) {
let time = null;
return function(...args) {
if(!time) {
// 当前没有事件
time = setTimeOut(() => {
time = null;
fn.apply(this, args)
}, wait)
}
}
}