93 lines
1.8 KiB
JavaScript
93 lines
1.8 KiB
JavaScript
/**
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* 防抖
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* @param {*} fn
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* @param {*} delay
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* @returns
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*/
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export const debounce = (fn, delay) => {
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let timer = null;
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return (...param) => {
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if (timer) clearTimeout(timer);
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timer = setTimeout(() => {
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fn(...param);
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}, delay);
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};
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}
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/**
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* 节流
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* @param {*} fn
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* @param {*} delay
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* @returns
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*/
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export const throttle = (fn, delay) => {
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let pre = 0;
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return (...params) => {
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let now = new Date().getTime();
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console.log('相差:',now-pre)
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if (now - pre > delay) {
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fn(...params);
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pre = now;
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}
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};
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}
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/**
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* 批量过滤对象值为空的属性
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* @param {Object} val 需要过滤的对象
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* @param {Array} arr 排除过滤的属性
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* @returns
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*/
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export const getFilterData = (val = {}, arr = []) => {
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let res = {}
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for(let key in val) {
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if(val[key]!==undefined&&val[key]!==null&&val[key]!==''&&(!arr.includes(key))){
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if(val[key] instanceof Number){
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if(!isNaN(val[key])) {
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res[key] = val[key]
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}
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}else{
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res[key] = val[key]
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}
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}
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}
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return res
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}
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/**
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* 对象深拷贝
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* @param {*} object
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* @returns
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*/
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export const copyObject = (object)=>{
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if(object.constructor==Object){
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let keys = Object.keys(object);
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let newObject = {};
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keys.map(key=>{
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newObject[key]= copyObject(object[key]);
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})
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return newObject;
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}else if(object.constructor==Array){
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return object.map(item=>{
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return copyObject(item);
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})
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}else{
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return object;
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}
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}
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/**
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*
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* @param {*} suffix
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* !w80
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!w100
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!w160
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!w200
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!w400
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!w800
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!wh400
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!w600
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*/
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export const screenshot = (url, suffix="!w200")=>{
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return url+suffix;
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} |