Angular6 项目开发常用时间组件服务
2024-03-15 05:31:51
一、利用Angular 命令行工具生成一个服务。
详情见：《Angular环境搭建》，服务代码如下：
import { Injectable } from '@angular/core';
@Injectable({
providedIn: 'root'
})
export class TimeutilProvider {
private today: Date;
private year: String;
private mouth: String;
private date: String;
private hours: String;
private minutes: String;
private seconds: String;
private milliseconds: String;
private week:number;
private weekday:Array<string> =["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
constructor () {
this.today = new Date();
this.year = this.today.getFullYear().toString();
this.mouth = (this.today.getMonth() + 1).toString();
this.date = this.today.getDate().toString();
this.hours = this.today.getHours().toString();
this.minutes = this.today.getMinutes().toString();
this.seconds = this.today.getSeconds().toString();
this.milliseconds = this.today.getMilliseconds().toString();
this.week = this.today.getDay();
if (Number(this.mouth) < 10) {
this.mouth = '0' + this.mouth;
} else {
}
if (Number(this.date) < 10) {
this.date = '0' + this.date;
} else {
}
if (Number(this.hours) < 10) {
this.hours = '0' + this.hours;
} else {
}
if (Number(this.minutes) < 10) {
this.minutes = '0' + this.minutes;
} else {
}
if (Number(this.seconds) < 10) {
this.seconds = '0' + this.seconds;
}
if (10 > Number(this.milliseconds)) {
this.milliseconds = '00' + this.milliseconds;
} else if ((10 <= Number(this.milliseconds)) && (100 > Number(this.milliseconds))) {
this.milliseconds = '0' + this.milliseconds;
} else {
// dothing
}
}
//返回当前星期
currentWeek(){
return this.weekday[this.week].toString();
// this.week.toString();
}
//20190306115830234格式
currentTime() {
return this.year + '' + this.mouth + '' + this.date + '' + this.hours + '' + this.minutes + '' + this.seconds + '' + this.milliseconds;
}
//一般用于生成唯一标识，例如uuid
currentTime_id() {
// 三位随机数以免重复
const random = (Math.random() * 100000000000000000).toString().substr(0, 3);
return this.year + '' + this.mouth + '' + this.date + ''
+ this.hours + '' + this.minutes + '' + this.seconds + '' + this.milliseconds + random;
}
//2019-03-06 11:59格式
currentTime_datestyle() {
return this.year + '-' + this.mouth + '-' + this.date + ' ' + this.hours + ':' + this.minutes + '';
}
//2019-03-06 11:59:30格式
currentTime_datesecondsstyle() {
return this.year + '-' + this.mouth + '-' + this.date + ' ' + this.hours + ':' + this.minutes + ':' + this.seconds;
}
// currentTime_date(){
// return this.year + '-' + this.mouth + '-' + this.date;
// }
// 返回当前时间"10:25:34"格式
currentTime_time(){
let now=new Date();
let year = (now.getFullYear()).toString();
let month = (now.getMonth()+1).toString();
let date = (now.getDate()).toString();
let hour = (now.getHours()).toString();
let minute= (now.getMinutes()).toString();
let second= (now.getSeconds()).toString();
if (Number(month) < 10) {
month = '0' + month;
} else {
}
if (Number(date) < 10) {
date = '0' + date;
} else {
}
if (Number(hour) < 10) {
hour = '0' + hour;
} else {
}
if (Number(minute) < 10) {
minute = '0' + minute;
} else {
}
if (Number(second) < 10) {
second = '0' + second;
}
return hour + ':' + minute + ':' + second;
}
//将当前时间转化为消息类型时间，2019.03.06 11:56:30格式
convertToDate_msgTimestamp(nows){
let now=new Date(nows);
let year = (now.getFullYear()).toString();
let month = (now.getMonth()+1).toString();
let date = (now.getDate()).toString();
let hour = (now.getHours()).toString();
let minute= (now.getMinutes()).toString();
let second= (now.getSeconds()).toString();
if (Number(month) < 10) {
month = '0' + month;
} else {
}
if (Number(date) < 10) {
date = '0' + date;
} else {
}
if (Number(hour) < 10) {
hour = '0' + hour;
} else {
}
if (Number(minute) < 10) {
minute = '0' + minute;
} else {
}
if (Number(second) < 10) {
second = '0' + second;
}
return year+"."+month+"."+date+" "+hour+":"+minute+":"+second;
}
//2019-03-06 11:56:30格式
convertToDate_timestamp(nows){
var now=new Date(nows);
var year = (now.getFullYear()).toString();
var month = (now.getMonth()+1).toString();
var date = (now.getDate()).toString();
var hour = (now.getHours()).toString();
var minute= (now.getMinutes()).toString();
var second= (now.getSeconds()).toString();
if (Number(month) < 10) {
month = '0' + month;
} else {
}
if (Number(date) < 10) {
date = '0' + date;
} else {
}
if (Number(hour) < 10) {
hour = '0' + hour;
} else {
}
if (Number(minute) < 10) {
minute = '0' + minute;
} else {
}
if (Number(second) < 10) {
second = '0' + second;
}
return year+"-"+month+"-"+date+" "+hour+":"+minute+":"+second;
}
//将消息时间格式转化为时间戳格式
convertTotimestamp(date:string){
return date.replace(".","-");
}
//将消息时间格式转化为Date类型
convertMsgtimeToDate(date:string){
//date = "2018.11.01 10:00:00";
date.replace(".","-");
return new Date(date)
}
//将时间戳格式日期转化为Date类型
convertTimestampToDate(date:string){
return new Date(date)
}
//获取当前时间前一天时间
getYestardayTime(){
return new Date(new Date().getTime() - 24*60*60*1000);
}
//返回当前日期“2018-02-03”格式
currentTime_daystyle() {
return this.year + "-" + this.mouth + "-" + this.date + " ";
}
//返回当前时间前一天时间“2018.02.03”格式
currentPreviousTime_daystyle() {
let previousDate = new Date(new Date().getTime() - 24*60*60*1000);
var year = (previousDate.getFullYear()).toString();
var month = (previousDate.getMonth()+1).toString();
var date = (previousDate.getDate()).toString();
if (Number(month) < 10) {
month = '0' + month;
} else {
}
if (Number(date) < 10) {
date = '0' + date;
} else {
}
return year + "." + month + "." + date + " ";
}
}
二、时间服务的使用
1.在要是用的组建构造函数中依赖注入，如下图：
constructor(private timeutil : TimeutilProvider) {
//调用方法
console.log("id:",this.timeutil.currentTime_id(););
}
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