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Copy path24-防抖和节流.html
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24-防抖和节流.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script>
function debounce(fn, delay) {
let timer = null
return function () {
let _this = this // 为了确保上下文的this
let args = [...arguments]
if (timer) {
clearTimeout(timer)
timer = null
}
timer = setTimeout(() => {
fn.apply(_this, args)
}, delay)
}
}
function throttle(fn, delay) {
let preTime = Date.now()
return function () {
let _this = this
let args = [...arguments]
let nowTime = Date.now()
if (nowTime - preTime > delay) {
preTime = Date.now()
return fn.apply(_this, args)
}
}
}
</script>
</head>
<body>
</body>
</html>