Angular Material日期选择器输入将日期视为美国格式 [英] Angular Material date picker input treat the date as US format

问题描述

在输入字段中填充日期(而不是通过日期选择器本身)时，日期将被视为美国格式. 例如，在输入字段-10/01/2019中输入后，它将变为01/10/2019，当打开日期选择器时，日期将是2019年10月的第一天.

When populating the date in the input field (not via the datepicker itself) date is treated as US format. For example, after typing in input field - 10/01/2019 it becomes 01/10/2019 and when opening the date picker the date is first of October 2019.

通过日期选择器选择日期时，没有问题，所选日期显示为dd/MM/yyyy

when selecting the date via the date picker there is no issue and selected date is displayed as dd/MM/yyyy

推荐答案

UPDATE 格式函数中存在错误"，需要在('0'+(date.getMonth()+ 1)).slice(-2)-

UPDATE There was a "bug" in format function -need a parenthesis in ('0'+(date.getMonth()+1)).slice(-2)-

只需创建一个DateAdapter

just create a DateAdapter

import {NativeDateAdapter,DateAdapter} from '@angular/material';

export class MyDateAdapter extends NativeDateAdapter{
  parse(value: string) {
    let it=value.split('/');
    if (it.length==3)
    return new Date(+it[2],+it[1]-1,+it[0],12)
  }

  format(date: Date, displayFormat: Object) {
    return ('0'+date.getDate()).slice(-2)+'/'+
           ('0'+(date.getMonth()+1)).slice(-2)+'/'+date.getFullYear()
  }
}

然后用作提供者

@Component({
  selector: 'datepicker-formats-example',
  templateUrl: 'datepicker-formats-example.html',
  styleUrls: ['datepicker-formats-example.css'],
    providers: [
    {provide: DateAdapter, useClass: MyDateAdapter}
  ],

})
export class DatepickerFormatsExample {
  date = new FormControl(new Date(Date.now()));
}

参见

stackblitz

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