如何在Moment JS中格式化日期

如何解决如何在Moment JS中格式化日期

我们如何自js时刻起自定义日期？我只想显示该月的Ex：周四10 。 我们如何才能实现使用力矩或管道需要您的帮助。

app.component.html

<h2>{{ dateCtr.value | date }}</h2>

app.component.ts

import { Component } from '@angular/core';
import {FormControl} from '@angular/forms';
import {MomentDateAdapter,MAT_MOMENT_DATE_ADAPTER_OPTIONS} from '@angular/material-moment-adapter';
import {DateAdapter,MAT_DATE_FORMATS,MAT_DATE_LOCALE} from '@angular/material/core';

import _moment from 'moment';
// tslint:disable-next-line:no-duplicate-imports
import {default as _rollupMoment} from 'moment';

const moment = _rollupMoment || _moment;

// See the Moment.js docs for the meaning of these formats:
// https://momentjs.com/docs/#/displaying/format/
export const MY_FORMATS = {
  parse: {
    dateInput: 'LL',},display: {
    dateInput: 'LL',monthYearLabel: 'MMM YYYY',dateA11yLabel: 'LL',monthYearA11yLabel: 'MMMM YYYY',};

@Component({
  selector: 'my-app',templateUrl: './app.component.html',styleUrls: [ './app.component.css' ],providers: [
    // `MomentDateAdapter` can be automatically provided by importing `MomentDateModule` in your
    // application's root module. We provide it at the component level here,due to limitations of
    // our example generation script.
    {
      provide: DateAdapter,useClass: MomentDateAdapter,deps: [MAT_DATE_LOCALE,MAT_MOMENT_DATE_ADAPTER_OPTIONS]
    },{provide: MAT_DATE_FORMATS,useValue: MY_FORMATS},],})

export class AppComponent  {

  dateCtr = new FormControl(moment());

  incrementDate(){
  this.dateCtr.setValue(moment(this.dateCtr.value).add(1,'days').format());
 }

  decrementDate(){
  this.dateCtr.setValue(moment(this.dateCtr.value).subtract(1,'days').format());
 }

}

pipe.ts

import { Pipe,PipeTransform } from '@angular/core';
import { DatePipe } from '@angular/common';

@Pipe({ name: 'mypipe' })
export class Mypipe implements PipeTransform {
  // adding a default value in case you don't want to pass the format then 'yyyy-MM-dd' will be used
  transform(date: Date | string,day: number,format: string = 'yyyy-MM-dd'): string {
    date = new Date(date);  // if orginal type was a string
    date.setDate(date.getDate() - day);
    return new DatePipe('en-US').transform(date,format);
  }
}

我们如何自js时刻起自定义日期？我只想显示该月的Ex：周四10 。 我们如何才能实现使用力矩或管道需要您的帮助。

解决方法

这可以立即完成。这是我的方法：
打字稿：

const days = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];
const months = ["January","February","March","April","May","June","July","August","September","October","November","December"]
const date = new Date();
const dayName = this.days[this.date.getDay()];
const monthName = this.months[this.date.getMonth()];

HTML：

<p>{{ dayName }} {{ date | date:'dd' }} {{ monthName }} {{ date | date:'yyyy' }}</p>

输出： 2020年10月8日星期二

,

第1步：从“ @ angular / comman”导入{Datepipe}； //导入app.modules.ts内部

步骤2：使用

{{dateCtr.value |日期：“ EE d”}}

代替

{{dateCtr.value |日期}}

,

使用此刻您可以实现它

moment(datavalue).format('ddd DD [of] MMMM')

我认为这可以解决您的问题。