Javascript 角度2+；添加零和逗号的管道

有没有办法通过管道将3个零附加到输入的值上

例如，如果用户键入1，则显示的值为1000

或99->99000

我试着去摆弄，但我无法让它添加正确的零数，或者使用逗号

使用自定义管道执行此操作的最佳方法是什么

谢谢创建自定义管道

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

@Pipe({
  name: 'customCurrency'
})
export class CustomCurrencyPipe implements PipeTransform {

  transform(value: any, args?: any): any {
    let x = value.toString() + '000';
    var lastThree = x.substring(x.length - 3);
    var otherNumbers = x.substring(0, x.length - 3);
    if (otherNumbers != '')
      lastThree = ',' + lastThree;
    var res = otherNumbers.replace(/\B(?=(\d{2})+(?!\d))/g, ",") +    lastThree;
    return res;
  }

}

---

示例：

@Chellapan给出了正确的答案，我的答案只是显示您是否只想在显示的每个数字后面加上“.000”

 import { Pipe, PipeTransform } from '@angular/core';
@Pipe({
  name: 'customNumber'
})
export class CustomNumberPipe implements PipeTransform {

  transform(value: any, args?: any): any {
    let x = `${value},000`
    return res;
  }

}

---

自angular 4以来的正确和默认方式：

<p>{{99 | number:'1.3-3'}}</p>
<!--output '99.000'-->

要使用不同的区域性，请不要忘记导入区域设置

import { registerLocaleData } from "@angular/common";

import localeDe from '@angular/common/locales/de';
import localeFr from '@angular/common/locales/fr';
import localeNl from '@angular/common/locales/nl';
import localeEnGb from '@angular/common/locales/en-GB';
import localeEnUs from '@angular/common/locales/en';

registerLocaleData(localeDe, CultureType.Development);
registerLocaleData(localeFr, CultureType.fr_FR);
registerLocaleData(localeNl, CultureType.nl_NL);
registerLocaleData(localeEnGb, CultureType.en_GB);
registerLocaleData(localeEnUs, CultureType.en_US);
registerLocaleData(localeDe, CultureType.de_DE);

export class CultureType {
    public static readonly Development: 'xh-ZA' = 'xh-ZA';
    public static readonly de_DE: 'de-DE' = 'de-DE';
    public static readonly nl_NL: 'nl-NL' = 'nl-NL';
    public static readonly fr_FR: 'fr-FR' = 'fr-FR';
    public static readonly en_GB: 'en-GB' = 'en-GB';
    public static readonly en_US: 'en-US' = 'en-US';
}

---

如果希望在函数中使用区域性设置数字的格式，则可以从以下步骤开始：

import { formatNumber, getLocaleNumberSymbol, NumberSymbol } from "@angular/common";

/**
 * DigitsInfo:
 * {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}
 * 1.2-2 => 1,00
 */
public formatNumber(num: number, digitsInfo: string): string {
    const culture: string = this.languageService.getCulture();
    return formatNumber(num, culture, digitsInfo);
}

---

您想再次将字符串解析为数字：

import { formatNumber, getLocaleNumberSymbol, NumberSymbol } from "@angular/common";

public parseStringNumber(str: string): number | null {
    if (!str) {
        return null;
    }

    const culture: string = this.languageService.getCulture();
    const decimalSeparator: string = getLocaleNumberSymbol(culture, NumberSymbol.Decimal);
    const groupSeparator: string = getLocaleNumberSymbol(culture, NumberSymbol.Group);
    const decimalSeparatorRegex = new RegExp('\\' + decimalSeparator, 'g');
    const groupSeparatorRegex = new RegExp('\\' + groupSeparator, 'g');
    const normalizedString = str.replace(groupSeparatorRegex, '').replace(decimalSeparatorRegex, '.');

    return parseFloat(normalizedString);
}

import { formatNumber, getLocaleNumberSymbol, NumberSymbol } from "@angular/common";

public parseStringNumber(str: string): number | null {
    if (!str) {
        return null;
    }

    const culture: string = this.languageService.getCulture();
    const decimalSeparator: string = getLocaleNumberSymbol(culture, NumberSymbol.Decimal);
    const groupSeparator: string = getLocaleNumberSymbol(culture, NumberSymbol.Group);
    const decimalSeparatorRegex = new RegExp('\\' + decimalSeparator, 'g');
    const groupSeparatorRegex = new RegExp('\\' + groupSeparator, 'g');
    const normalizedString = str.replace(groupSeparatorRegex, '').replace(decimalSeparatorRegex, '.');

    return parseFloat(normalizedString);
}