小程序之常用工具类详解

前言：

做微信小程序当中，会遇到好多的工具类util.js，这里记载下来以便平常使用 (Ps:建议通过目录查看)

-获取日期（格式化）

function formatTime(date) {
 var year = date.getFullYear()
 var mOnth= date.getMonth() + 1
 var day = date.getDate()


 var hour = date.getHours()
 var minute = date.getMinutes()
 var secOnd= date.getSeconds()




 return [year, month, day].map(formatNumber).join(&＃39;/&＃39;) + &＃39; &＃39; + [hour, minute, second].map(formatNumber).join(&＃39;:&＃39;)
}


function formatNumber(n) {
 n = n.toString()
 return n[1] ? n : &＃39;0&＃39; + n
}

-获取动态更新时间

function getDateDiff (dateTimeStamp) {
 var minute = 1000 * 60;
 var hour = minute * 60;
 var day = hour * 24;
 var halfamOnth= day * 15;
 var mOnth= day * 30;
 var year = day * 365;
 var now = new Date().getTime();
 var diffValue = now - dateTimeStamp;
 if(diffValue <0){
  //非法操作
  return &＃39;数据出错&＃39;;
 }
 var yearC = diffValue / year;
 var mOnthC= diffValue / month;
 var weekC = diffValue / (7 * day);
 var dayC = diffValue / day;
 var hourC = diffValue / hour;
 var minC = diffValue / minute;
 if(yearC >= 1){
  result = parseInt(yearC) + &＃39;年以前&＃39;;
 }else if(monthC >= 1){
  result = parseInt(monthC) + &＃39;个月前&＃39;;
 }else if(weekC >= 1){
  result = parseInt(weekC) + &＃39;星期前&＃39;;
 }else if(dayC >= 1){
  result = parseInt(dayC) + &＃39;天前&＃39;;
 }else if(hourC >= 1){
  result = parseInt(hourC) + &＃39;小时前&＃39;;
 }else if(minC >= 5){
  result = parseInt(minC) + &＃39;分钟前&＃39;;
 }else{
  result = &＃39;刚刚发表&＃39;;
 }
 return result;
}

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