//防抖
const debounce = function(func, delay) {
let timer = 0;
return function() {
clearTimeout(timer)
timer = setTimeout(() => {
func()
}, delay)
}
}
//节流
const throttle = function(func, delay) {
let timer = +new Date();
return function() {
let cur = +new Date();
if (cur - timer > delay){
func(...arguments);
timer = cur;
}
}
}
