/* 防抖 */
function debounce(fn, delay) {
let timer;
return function () {
clearTimeout(timer)
timer = setTimeout(() => {
fn.apply(null, arguments);
},delay)
}
}
function debounce(fn, delay) {
let timer;
return function () {
clearTimeout(timer)
timer = setTimeout(() => {
fn.apply(null, arguments);
},delay)
}
}
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