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Angular6 项目开发常用时间组件服务

作者:互联网

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:

  1 import { Injectable } from '@angular/core';
  2 
  3 @Injectable({
  4   providedIn: 'root'
  5 })
  6 export class TimeutilProvider {
  7 
  8   private today: Date;
  9   private year: String;
 10   private mouth: String;
 11   private date: String;
 12   private hours: String;
 13   private minutes: String;
 14   private seconds: String;
 15   private milliseconds: String;
 16   private week:number;
 17   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"];
 18   constructor () {
 19     this.today = new Date();
 20     this.year = this.today.getFullYear().toString();
 21     this.mouth = (this.today.getMonth() + 1).toString();
 22     this.date = this.today.getDate().toString();
 23     this.hours = this.today.getHours().toString();
 24     this.minutes = this.today.getMinutes().toString();
 25     this.seconds = this.today.getSeconds().toString();
 26     this.milliseconds = this.today.getMilliseconds().toString();
 27 
 28     this.week = this.today.getDay();
 29 
 30     if (Number(this.mouth) < 10) {
 31       this.mouth = '0' + this.mouth;
 32     } else {
 33     }
 34     if (Number(this.date) < 10) {
 35       this.date = '0' + this.date;
 36     } else {
 37     }
 38     if (Number(this.hours) < 10) {
 39       this.hours = '0' + this.hours;
 40     } else {
 41     }
 42     if (Number(this.minutes) < 10) {
 43       this.minutes = '0' + this.minutes;
 44     } else {
 45     }
 46     if (Number(this.seconds) < 10) {
 47       this.seconds = '0' + this.seconds;
 48     }
 49     if (10 > Number(this.milliseconds)) {
 50       this.milliseconds = '00' + this.milliseconds;
 51     } else if ((10 <= Number(this.milliseconds)) && (100 > Number(this.milliseconds))) {
 52       this.milliseconds = '0' + this.milliseconds;
 53     } else {
 54       // dothing
 55     }
 56   }
 57 
 58   //返回当前星期
 59   currentWeek(){
 60     return this.weekday[this.week].toString();
 61     // this.week.toString();
 62   }
 63 
 64   //20190306115830234格式
 65   currentTime() {
 66     return this.year + '' + this.mouth + '' + this.date + '' + this.hours + '' + this.minutes + '' + this.seconds + '' + this.milliseconds;
 67   }
 68 
 69   //一般用于生成唯一标识,例如uuid
 70   currentTime_id() {
 71     // 三位随机数以免重复
 72     const random = (Math.random() * 100000000000000000).toString().substr(0, 3);
 73     
 74     return this.year + '' + this.mouth + '' + this.date + ''
 75     + this.hours + '' + this.minutes + '' + this.seconds + '' + this.milliseconds + random;
 76   }
 77 
 78   //2019-03-06 11:59格式
 79   currentTime_datestyle() {
 80     return this.year + '-' + this.mouth + '-' + this.date + ' ' + this.hours + ':' + this.minutes + '';
 81   }
 82 
 83   //2019-03-06 11:59:30格式
 84   currentTime_datesecondsstyle() {
 85     return this.year + '-' + this.mouth + '-' + this.date + ' ' + this.hours + ':' + this.minutes + ':' + this.seconds;
 86   }
 87   
 88   
 89   // currentTime_date(){
 90   //   return this.year + '-' + this.mouth + '-' + this.date;
 91   // }
 92 
 93   // 返回当前时间"10:25:34"格式
 94   currentTime_time(){
 95     let now=new Date();
 96     let year  = (now.getFullYear()).toString();
 97     let month = (now.getMonth()+1).toString();
 98     let date  = (now.getDate()).toString();
 99     let hour  = (now.getHours()).toString();
100     let minute= (now.getMinutes()).toString();
101     let second= (now.getSeconds()).toString();
102 
103     if (Number(month) < 10) {
104           month = '0' + month;
105     } else {
106     }
107     if (Number(date) < 10) {
108           date = '0' + date;
109     } else {
110     }
111     if (Number(hour) < 10) {
112           hour = '0' + hour;
113     } else {
114     }
115     if (Number(minute) < 10) {
116           minute = '0' + minute;
117     } else {
118     }
119     if (Number(second) < 10) {
120           second = '0' + second;
121     }
122 
123     return hour + ':' + minute + ':' + second;
124   }
125 
126   
127 
128   //将当前时间转化为消息类型时间,2019.03.06 11:56:30格式
129   convertToDate_msgTimestamp(nows){
130     let now=new Date(nows);
131     let year  = (now.getFullYear()).toString();
132     let month = (now.getMonth()+1).toString();
133     let date  = (now.getDate()).toString();
134     let hour  = (now.getHours()).toString();
135     let minute= (now.getMinutes()).toString();
136     let second= (now.getSeconds()).toString();
137 
138     if (Number(month) < 10) {
139           month = '0' + month;
140     } else {
141     }
142     if (Number(date) < 10) {
143           date = '0' + date;
144     } else {
145     }
146     if (Number(hour) < 10) {
147           hour = '0' + hour;
148     } else {
149     }
150     if (Number(minute) < 10) {
151           minute = '0' + minute;
152     } else {
153     }
154     if (Number(second) < 10) {
155           second = '0' + second;
156     }
157       return year+"."+month+"."+date+" "+hour+":"+minute+":"+second; 
158   }
159 
160   //2019-03-06 11:56:30格式
161   convertToDate_timestamp(nows){
162     var now=new Date(nows);
163     var year  = (now.getFullYear()).toString();
164     var month = (now.getMonth()+1).toString();
165     var date  = (now.getDate()).toString();
166     var hour  = (now.getHours()).toString();
167     var minute= (now.getMinutes()).toString();
168     var second= (now.getSeconds()).toString();
169 
170     if (Number(month) < 10) {
171           month = '0' + month;
172     } else {
173     }
174     if (Number(date) < 10) {
175           date = '0' + date;
176     } else {
177     }
178     if (Number(hour) < 10) {
179           hour = '0' + hour;
180     } else {
181     }
182     if (Number(minute) < 10) {
183           minute = '0' + minute;
184     } else {
185     }
186     if (Number(second) < 10) {
187           second = '0' + second;
188     }
189       return year+"-"+month+"-"+date+" "+hour+":"+minute+":"+second; 
190   }
191 
192 
193   //将消息时间格式转化为时间戳格式
194   convertTotimestamp(date:string){
195     return date.replace(".","-");
196   }
197 
198 
199   //将消息时间格式转化为Date类型
200   convertMsgtimeToDate(date:string){
201     //date = "2018.11.01 10:00:00";
202     date.replace(".","-");
203     return new Date(date)
204   }
205 
206   //将时间戳格式日期转化为Date类型
207   convertTimestampToDate(date:string){    
208     return new Date(date)
209   }
210 
211   //获取当前时间前一天时间
212   getYestardayTime(){
213    return new Date(new Date().getTime() - 24*60*60*1000); 
214   }
215 
216   //返回当前日期“2018-02-03”格式
217   currentTime_daystyle() {
218       return this.year + "-" + this.mouth + "-" + this.date + " ";
219   }
220 
221   //返回当前时间前一天时间“2018.02.03”格式
222   currentPreviousTime_daystyle() {
223     let previousDate = new Date(new Date().getTime() - 24*60*60*1000); 
224     var year  = (previousDate.getFullYear()).toString();
225     var month = (previousDate.getMonth()+1).toString();
226     var date  = (previousDate.getDate()).toString();
227     if (Number(month) < 10) {
228       month = '0' + month;
229     } else {
230     }
231     if (Number(date) < 10) {
232           date = '0' + date;
233     } else {
234     }
235 
236     return year + "." + month + "." + date + " ";
237   }
238 }

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: 

1 constructor(private timeutil : TimeutilProvider) {
2      //调用方法
3      console.log("id:",this.timeutil.currentTime_id(););
4 }    

 

标签:10,常用,Number,else,Angular6,date,toString,组件,now
来源: https://www.cnblogs.com/mycnblogs-guoguo/p/10482754.html