1.

1、ajax请求

constwxPromisifyfn(obj{})newPromise((resolve,reject){obj.successresresolve(res)//成功(可在里面加处理，如登录超时等)obj.failresreject(res)//失败fn(obj)})constajaxFns(url,data,method,contentType)wxPromisify(wx.request)({url:url,data:data,method:method?method:'POST',header:{cookie:getApp().globalData.token?getApp().globalData.token:'','content-type':contentType?contentType:'application/x-www-form-urlencoded'}})例子：ajaxFns(url,data,method,contentType).then(res{})2.

2、时间格式转换

constformatTime(date,type){letyeardate.getFullYear()//年letmonthdate.getMonth()+1//月letdaydate.getDate()//日lethourdate.getHours()//时letminutedate.getMinutes()//分letseconddate.getSeconds()//秒letgetMillisecondsdate.getMilliseconds()//毫秒if(type1){//2019-12-1212:12:12return[year,month,day].map(formatNumber).join('-')+''+[hour,minute,second].map(formatNumber).join(':')}elseif(type2){//2019年12月12日if(month10)month'0'+monthif(day10)day'0'+dayreturnyear+'年'+month+'月'+day+'日'}elseif(type3){//时间戳123456789returndate.getTime()}}constformatNumbern{nn.toString()returnn[1]?n:'0'+n}例子：formatTime(newDate(),type)3.

3、页面跳转

constgotoPage(url,param){wx.navigateTo({url:parseUrl(url,param)})}例子：gotoPage(url,{param:param})constgotoTab(url,param){wx.reLaunch({url:parseUrl(url,param)})}例子：gotoTab(url,{param:param})constbackPage(val){//返回堆栈上级页面层数注:redirectTo页面不会将页面加入堆栈wx.navigateBack({delta:val})}例子：backPage(num)//返回几层就输多少constparseUrl(url,param){if(typeof(param)!"object")returnurlvarstr''for(letiinparam){str+(''+i+''+param[i])}if(url.indexOf('?')-1){returnurl+str}else{returnurl+'?'+str.substr(1)}}4.

4、排序

constsortFns(arr,param){//数组排序参数returnarr.sort(compare(param))}constcompare(property){return(a,b){varvalue1a[property]varvalue2b[property]returnvalue1-value2}}例子：sortFns(arr,'param')5.

5、缓存

constsetStorage(key,data){//存wx.setStorageSync(key,data)}constgetStorage(key){//取returnwx.getStorageSync(key)}constremoveStorage(key){//删wx.removeStorageSync(key)}6.

6、url截取参数

constgetUrlParam(url,param){letregnewRegExp("(^|)"+param+"([^]*)(|$)");//构造一个含有目标参数的正则表达式对象letindexurl.indexOf("?")letrurl.substring(index).substr(1).match(reg)//匹配目标参数if(r!null)returnunescape(r[2])returnnull//返回参数值}7.

7、提供2个数生成区间数组

constrangeArray(start,end)Array.apply(null,{length:end-start+1}).map((v,i)i+start)8.

8、保留小数

consttoMoney(num)num.toFixed(2).split('').reverse().join('').replace(/(d{3})/g,'$1,').replace(/,$/,'').split('').reverse().join('')9.

9、菊花遮罩

constshowLoading(title){wx.showLoading({title:title,mask:true})}consthideLoading(){wx.hideLoading()}constshowToast(title,icon'none'){wx.showToast({title,icon,duration:1500,mask:true})}consthideToast(){wx.hideToast()}10.

10、数字转中文汉字

consttoChinesNum(num){constchangeNum['零','一','二','三','四','五','六','七','八','九']constunit["","十","百","千","万"]numparseInt(num)letgetWan(temp){　　letstrArrtemp.toString().split("").reverse()　　letnewNum""　　for(vari0;istrArr.length;i++){newNum(i0strArr[i]0?"":(i0strArr[i]0strArr[i-1]0?"":changeNum[strArr[i]]+(strArr[i]0?unit[0]:unit[i])))+newNum}　returnnewNum}letoverWanMath.floor(num/10000)letnoWannum%10000if(noWan.toString().length4)noWan"0"+noWanreturnoverWan?getWan(overWan)+"万"+getWan(noWan):getWan(num)}