<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<meta name="author" content="杨欣">
<title>防抖与节流</title>
<style>
</style>
</head>
<body>
<label for="debounce">测试防抖：</label>
<input type="text" id="debounce"><br>
<label for="ithrottlept">测试节流：</label>
<input type="text" id="throttle"><br>
<script>
var input1 = document.getElementById("debounce");
var input2 = document.getElementById("throttle");
//防抖的含义就是让某个时间期限内，事件处理函数只执行一次。
function debounce(fn, wait) {
var timeout;
return function () {
clearTimeout(timeout)
var context = this, args = arguments;
timeout = setTimeout(function () {
fn.apply(context, args)
}, wait)
}
}
var handlerDebounce = debounce(function () {
console.log("防抖成功！");
}, 500)
input1.addEventListener("input", handlerDebounce)
//如果短时间内大量触发同一事件，那么在函数执行一次之后，该函数在指定的时间期限内不再工作，直至过了这段时间才重新生效。
function throttle(fn, wait) {
var context, args, timer;
return function () {
if (!timer) {
context = this, args = arguments;
timer = setTimeout(function () {
timer = null;
fn.apply(context, args)
}, wait);
}
}
}
var handlerThrottle = throttle(function () {
console.log("节流成功");
}, 500)
input2.addEventListener("input", handlerThrottle)
</script>
</body>
</html>