一、小程序中经常出现后端返回时间戳,需要对时间戳做处理。
评论需求:显示评论的时间戳为几分钟前、刚刚、一天前等
效果展示:
上代码:
在小程序中封装util.js方法
// 评论时间戳转换
const gettime = n => {
const now = Math.round(new Date() / 1000)
// let B = 1554701931 测试年
const diff = now - n
if (diff > 2678400) {
//算年
let strDate = '';
let date = new Date(n * 1000);//时间戳为10位需*1000,时间戳为13位的话不需乘1000
let Y = date.getFullYear() + '-';
let M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-';
let D = (date.getDate() < 10 ? '0' + date.getDate() : date.getDate()) + ' ';
strDate = Y + M + D;
return strDate;
} else {
//算天
let days = parseInt(diff / (60 * 60 * 24));
if (days > 0) {
return days + "天前";
};
let hours = parseInt((diff % (60 * 60 * 24)) / (60 * 60));
if (hours > 0) {
return hours + "小时前";
};
let minutes = parseInt((diff % (60 * 60)) / (60));
if (minutes > 0) {
return minutes + "分钟前";
};
let seconds = diff;
if (seconds >= 0) {
return "刚刚";
}
}
}
//导出
module.exports = {
gettime:gettime
}
二、富文本处理图片文字超过边框做处理
效果展示:
代码展示:
// 处理富文本
const formatRichText = html => {
let newContent = html.replace(/]*>/gi, function (match, capture) {
match = match.replace(/style="[^"]+"/gi, '').replace(/style='[^']+'/gi, '');
match = match.replace(/width="[^"]+"/gi, '').replace(/width='[^']+'/gi, '');
match = match.replace(/height="[^"]+"/gi, '').replace(/height='[^']+'/gi, '');
return match;
});
newContent = newContent.replace(/style="[^"]+"/gi, function (match, capture) {
match = match.replace(/width:[^;]+;/gi, 'max-width:100%;').replace(/width:[^;]+;/gi, 'max-width:100%;');
return match;
});
newContent = newContent.replace(/
]*\/>/gi, '');
newContent = newContent.replace(/\, ');
return newContent;
}
module.exports = {
formatRichText:formatRichText
}
三、聊天室等其他处理时间戳
高级用法:
const gettime = {
// 计算当前日期星座
getHoroscope(date) {
let c = ['摩羯','水瓶','双鱼','白羊','金牛','双子','巨蟹','狮子','处女','天秤','天蝎','射手','摩羯']
date=new Date(date);
let month = date.getMonth() + 1;
let day = date.getDate();
let startMonth = month - (day - 14 < '865778999988'.charAt(month));
return c[startMonth]+'座';
},
// 计算指定时间与当前的时间差
sumAge(data){
let dateBegin = new Date(data.replace(/-/g, "/"));
let dateEnd = new Date();//获取当前时间
let dateDiff = dateEnd.getTime() - dateBegin.getTime();//时间差的毫秒数
let dayDiff = Math.floor(dateDiff / (24 * 3600 * 1000));//计算出相差天数
let leave1=dateDiff%(24*3600*1000) //计算天数后剩余的毫秒数
let hours=Math.floor(leave1/(3600*1000))//计算出小时数
//计算相差分钟数
let leave2=leave1%(3600*1000) //计算小时数后剩余的毫秒数
let minutes=Math.floor(leave2/(60*1000))//计算相差分钟数
//计算相差秒数
let leave3=leave2%(60*1000) //计算分钟数后剩余的毫秒数
let seconds=Math.round(leave3/1000)
return dayDiff+"天 "+hours+"小时 ";
},
// 获取聊天时间(相差300s内的信息不会显示时间)
getChatTime(v1,v2){
v1=v1.toString().length<13 ? v1*1000 : v1;
v2=v2.toString().length<13 ? v2*1000 : v2;
if(((parseInt(v1)-parseInt(v2))/1000) > 300){
return this.gettime(v1);
}
},
// 人性化时间格式
gettime(shorttime){
shorttime=shorttime.toString().length<13 ? shorttime*1000 : shorttime;
let now = (new Date()).getTime();
let cha = (now-parseInt(shorttime))/1000;
if (cha < 43200) {
// 当天
return this.dateFormat(new Date(shorttime),"{A} {t}:{ii}");
} else if(cha < 518400){
// 隔天 显示日期+时间
return this.dateFormat(new Date(shorttime),"{Mon}月{DD}日 {A} {t}:{ii}");
} else {
// 隔年 显示完整日期+时间
return this.dateFormat(new Date(shorttime),"{Y}-{MM}-{DD} {A} {t}:{ii}");
}
},
parseNumber(num) {
return num < 10 ? "0" + num : num;
},
dateFormat(date, formatStr) {
let dateObj = {
},
rStr = /\{([^}]+)\}/,
mons = ['一', '二', '三', '四', '五', '六', '七', '八', '九', '十', '十一', '十二'];
dateObj["Y"] = date.getFullYear();
dateObj["M"] = date.getMonth() + 1;
dateObj["MM"] = this.parseNumber(dateObj["M"]);
dateObj["Mon"] = mons[dateObj['M'] - 1];
dateObj["D"] = date.getDate();
dateObj["DD"] = this.parseNumber(dateObj["D"]);
dateObj["h"] = date.getHours();
dateObj["hh"] = this.parseNumber(dateObj["h"]);
dateObj["t"] = dateObj["h"] > 12 ? dateObj["h"] - 12 : dateObj["h"];
dateObj["tt"] = this.parseNumber(dateObj["t"]);
dateObj["A"] = dateObj["h"] > 12 ? '下午' : '上午';
dateObj["i"] = date.getMinutes();
dateObj["ii"] = this.parseNumber(dateObj["i"]);
dateObj["s"] = date.getSeconds();
dateObj["ss"] = this.parseNumber(dateObj["s"]);
while(rStr.test(formatStr)) {
formatStr = formatStr.replace(rStr, dateObj[RegExp.$1]);
}
return formatStr;
},
// 获取年龄
getAgeByBirthday(data){
let birthday=new Date(data.replace(/-/g, "\/"));
let d=new Date();
return d.getFullYear()-birthday.getFullYear()-((d.getMonth()<birthday.getMonth()|| d.getMonth()==birthday.getMonth() && d.getDate()<birthday.getDate())?1:0);
}
}
export default{
gettime
}