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new-cashier/jeepay-ui-uapp-merchant/components/my-components/libs/function/debounce.js
YeMingfei666 da5f7ca916 请求处理代理
商品管理
商品分类
用户管理
桌台
代客下单
进销存
交班
预定座位
充值管理
存酒管理
2024-09-03 11:32:15 +08:00

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let timeout = null
/**
* 防抖原理一定时间内只有最后一次操作再过wait毫秒后才执行函数
*
* @param {Function} func 要执行的回调函数
* @param {Number} wait 延时的时间
* @param {Boolean} immediate 是否立即执行
* @return null
*/
export function debounce(func, wait = 500, immediate = false) {
// 清除定时器
if (timeout !== null) clearTimeout(timeout)
// 立即执行,此类情况一般用不到
if (immediate) {
const callNow = !timeout
timeout = setTimeout(() => {
timeout = null
}, wait)
if (callNow) typeof func === 'function' && func()
} else {
// 设置定时器当最后一次操作后timeout不会再被清除所以在延时wait毫秒后执行func回调方法
timeout = setTimeout(() => {
typeof func === 'function' && func()
}, wait)
}
}
export default debounce