<input [(ngModel)]="item.value" name="inputField" type="text" />
我想格式化它的值并使用现有的管道：
.... [(ngModel)]="item.value | currency:'USD':true" .....
此外,我试图以下面的方式使用它,但它第一次给我理想的输出并在更新字段时显示错误：
<input type="text" [ngModel]="item.value | currency:'USD':true" (ngModelChange)="item.value=($event)">
ERROR Error: InvalidPipeArgument: ” for pipe ‘CurrencyPipe’
at invalidPipeArgumentError (common.es5.js:2610)
at formatNumber (common.es5.js:3176)
at CurrencyPipe.webpackJsonp…/../../common/@angular/common.es5.js.CurrencyPipe.transform (common.es5.js:3350)
at LandingPageComponent.webpackJsonp…/../../../../src/app/guest-handling/landing-page/landing-page.component.ts.LandingPageComponent.transformAmount (landing-page.component.ts:54)
at Object.eval [as handleEvent] (LandingPageComponent.html:38)
at handleEvent (core.es5.js:12014)
at callWithDebugContext (core.es5.js:13475)
at Object.debugHandleEvent [as handleEvent] (core.es5.js:13063)
at dispatchEvent (core.es5.js:8607)
at core.es5.js:9218
