You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.3 KiB
43 lines
1.3 KiB
2 years ago
|
/* eslint-disable prefer-rest-params */
|
||
|
|
/* eslint-disable @typescript-eslint/ban-types */
|
||
|
|
/*
|
||
|
|
* @Author: weisheng
|
||
|
|
* @Date: 2021-12-21 14:23:23
|
||
|
|
* @LastEditTime: 2023-04-18 16:56:06
|
||
|
|
* @LastEditors: weisheng
|
||
|
|
* @Description: 防抖函数
|
||
|
|
* @FilePath: \fant-mini-plus\src\uni_modules\fant-mini-plus\libs\functions\debounce.ts
|
||
|
|
* 记得注释
|
||
|
|
*/
|
||
|
|
|
||
|
|
let timer: Nullable<number> | any = 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: Function, wait: number = 500, immediate: boolean = false) {
|
||
|
|
function debouncefunc(...args: any) {
|
||
|
|
// 清除定时器
|
||
|
|
if (timer !== null) clearTimeout(timer)
|
||
|
|
// 立即执行，此类情况一般用不到
|
||
|
|
if (immediate) {
|
||
|
|
const callNow = !timer
|
||
|
|
timer = setTimeout(() => {
|
||
|
|
timer = null
|
||
|
|
}, wait)
|
||
|
|
if (callNow) typeof func === 'function' && func(...args)
|
||
|
|
} else {
|
||
|
|
// 设置定时器，当最后一次操作后，timer不会再被清除，所以在延时wait毫秒后执行func回调方法
|
||
|
|
timer = setTimeout(() => {
|
||
|
|
typeof func === 'function' && func(...args)
|
||
|
|
}, wait)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return debouncefunc
|
||
|
|
}
|