问题描述
我正在尝试使用一种反应形式,其中用户使用 mat-datepicker 输入了一些日期。我面临的问题是 mat-datepicker 的输出是一个包含日期的时刻对象。我想获取字符串中的日期(例如:“YYYY-MM-DD”)而不是对象。
目前,我的表单组件的 html 模板如下所示:
<form [formGroup]="myForm">
<mat-form-field>
<mat-label>Date d'expiration</mat-label>
<input matInput [matDatepicker]="picker" formControlName="expireDate">
<mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
<mat-datepicker #picker></mat-datepicker>
</mat-form-field>
而且,我的组件看起来像这样:
import { Component,OnInit } from '@angular/core';
import { FormBuilder,FormGroup,Validators } from '@angular/forms'
declare var require: any
const moment = require('moment');
@Component({
selector: 'app-form',templateUrl: './form.component.html',styleUrls: ['./form.component.css'],})
export class FormComponent implements OnInit{
myForm : FormGroup;
constructor(private fb: FormBuilder) { }
ngOnInit(): void {
this.myForm = this.fb.group({
expireDate: [moment(),[
Validators.required,]],});
}
}
提前致谢!
解决方法
您可以像这个例子一样格式化 moment 日期对象:
const currentDate = moment();
moment(currentDate).format('YYYY-MM-DD');
,
HTML
<form [formGroup]="myForm">
<mat-form-field>
<mat-label>Date d'expiration</mat-label>
<input matInput [matDatepicker]="picker" formControlName="expireDate" (dateChange)="changeDatePicker()">
<mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
<mat-datepicker #picker></mat-datepicker>
</mat-form-field>
</form>
TS
为表单组中的 expiredate 赋值
changeDatePicker(): any {
this.myForm.value.expireDate = moment(this.myForm.value.expireDate).format('YYYY-MM-DD');
}
- 对于多个日期选择器
HTML
<form [formGroup]="myForm">
<mat-form-field>
<mat-label>Date d'expiration</mat-label>
<input matInput [matDatepicker]="picker" formControlName="expireDate" (dateChange)="changeDatePicker()">
<mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
<mat-datepicker #picker></mat-datepicker>
</mat-form-field>
<mat-form-field>
<mat-label>Date d'expiration</mat-label>
<input matInput [matDatepicker]="picker1" formControlName="expireDate2" (dateChange)="changeDatePicker()">
<mat-datepicker-toggle matSuffix [for]="picker1"></mat-datepicker-toggle>
<mat-datepicker #picker1></mat-datepicker>
</mat-form-field>
</form>
TS
myForm = this.fb.group({
expireDate: ['',Validators.required],expireDate2: ['',});
changeDatePicker(): any {
this.myForm.value.expireDate = (moment(this.myForm.value.expireDate).format('YYYY-MM-DD'));
this.myForm.value.expireDate2 = (moment(this.myForm.value.expireDate2).format('YYYY-MM-DD'));
}