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| var app = angular.module('converter', []); | |
| app.directive('converter', function(converters) { | |
| return { | |
| require: 'ngModel', | |
| link: function(scope, element, attr, ngModel) { | |
| var converter = converters[attr.converter]; | |
| ngModel.$formatters.unshift(converter.formatter); | |
| ngModel.$parsers.push(converter.parser); | |
| }, | |
| controller: function($scope, $element) { | |
| } | |
| }; | |
| }); | |
| app.value('converters', { | |
| c2f: { | |
| formatter: function(c) { | |
| return 9 / 5 * parseFloat(c) + 32; | |
| }, | |
| parser: function(f) { | |
| return 5 / 9 * (f - 32); | |
| } | |
| } | |
| }); |
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| <html ng-app="converter"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Temperature Converter</title> | |
| <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js"></script> | |
| <script src="converter.js"></script> | |
| </head> | |
| <body> | |
| <div> | |
| <input type="number" ng-model="a">℃ ⟷ | |
| <input type="number" ng-model="a" converter="c2f">℉ | |
| </div> | |
| </body> | |
| </html> |
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