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Figuren

AngularJS: API: ng/filter/currency

currency

  1. - filter in module ng

格式化数字为货币形式 (如 $1,234.56)。当提供的不是货币形式时,会使用本地化默认形式。

用法

用于HTML模板绑定

{{ currency_expression | currency : symbol}}

用于JavaScript

$filter('currency')(amount, symbol)

参数

参数 类型 详述
amount number

用于过滤器的输入。

symbol
(可选)
string

用于显示的货币形式或标识。

返回值

string

格式化的数值。

示例

index.html
<script>
  angular.module('currencyExample', [])
    .controller('ExampleController', ['$scope', Function($scope) {
      $scope.amount = 1234.56;
    }]);
</script>
<div ng-controller="ExampleController">
  <input Type="number" ng-model="amount"> <br>
  default currency symbol ($): <span id="currency-default">{{amount | currency}}</span><br>
  custom currency identifier (USD$): <span>{{amount | currency:"USD$"}}</span>
</div>
protractor.js
it('should init with 1234.56', Function() {
  expect(element(by.id('currency-default')).getText()).toBe('$1,234.56');
  expect(element(by.binding('amount | currency:"USD$"')).getText()).toBe('USD$1,234.56');});
it('should update', Function() {
  if (browser.params.browser == 'safari') {
    // Safari does not understand the minus key. See
    // https://github.com/angular/protractor/issues/481
    return;
  }
  element(by.model('amount')).clear();
  element(by.model('amount')).sendKeys('-1234');
  expect(element(by.id('currency-default')).getText()).toBe('($1,234.00)');
  expect(element(by.binding('amount | currency:"USD$"')).getText()).toBe('(USD$1,234.00)');});
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