我希望在失去焦点后将输入文本的值格式化为货币。我如何在angular4中实现这一目标?
<input type="text" name="txtamount" [(ngModel)]="amount" />
任何建议都将不胜感激。谢谢!
答案 0 :(得分:5)
在CurrencyPipe
上使用(blur)
转换。
<input type="text" name="txtamount" [(ngModel)]="amount"
(blur)="transformAmount($event)" [(value)]="formattedAmount"/>
<br/>
<br/>
<div>
Formatted Amount on loosing focus: {{ formattedAmount }}
</div>
<br/>
<div>
Formatted Amount inline with Pipe: {{ amount | currency:'USD' }}
</div>
并在您的.ts代码中
transformAmount(element: HtmlElement){
this.formattedAmount = this.currencyPipe.transform(this.amount, 'USD');
// Remove or comment this line if you dont want
// to show the formatted amount in the textbox.
element.target.value = this.formattedAmount;
}
您需要从CurrencyPipe
导入'@angular/common'
并将其添加到应用providers: [ ... ]
中。
请参阅此PLUNKER DEMO