微信小程序 常用工具类详解及实例

微信小程序 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('/') + ' ' + [hour, minute, second].map(formatnumber).join(':')
}

function formatnumber(n) {
 n = n.tostring()
 return n[1] ? n : '0' + 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 '数据出错';
 }
 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) + '年以前';
 }else if(monthc >= 1){
  result = parseint(monthc) + '个月前';
 }else if(weekc >= 1){
  result = parseint(weekc) + '星期前';
 }else if(dayc >= 1){
  result = parseint(dayc) + '天前';
 }else if(hourc >= 1){
  result = parseint(hourc) + '小时前';
 }else if(minc >= 5){
  result = parseint(minc) + '分钟前';
 }else{
  result = '刚刚发表';
 }
 return result;
}

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