Exercise 1.4 : Accessing the Backend

-
*******************************index.html*****************************
<div ng-app="invoice3" ng-controller="InvoiceController as invoice">
  <b>Invoice:</b>
  <div>
    Quantity: <input type="number" min="0" ng-model="invoice.qty" required >
  </div>
  <div>
    Costs: <input type="number" min="0" ng-model="invoice.cost" required >
    <select ng-model="invoice.inCurr">
      <option ng-repeat="c in invoice.currencies">{{c}}</option>
    </select>
  </div>
  <div>
    <b>Total:</b>
    <span ng-repeat="c in invoice.currencies">
      {{invoice.total(c) | currency:c}}
    </span><br>
    <button class="btn" ng-click="invoice.pay()">Pay</button>
  </div>
</div>
*******************************index.html*****************************

*******************************finance3.js*****************************
angular.module('finance3', [])
.factory('currencyConverter', ['$http', function($http) {
  var currencies = ['USD', 'EUR', 'CNY'];
  var usdToForeignRates = {};

  var convert = function(amount, inCurr, outCurr) {
    return amount * usdToForeignRates[outCurr] / usdToForeignRates[inCurr];
  };

  var refresh = function() {
    var url = 'https://api.exchangeratesapi.io/latest?base=USD&symbols=' + currencies.join(",");
    return $http.get(url).then(function(response) {
      usdToForeignRates = response.data.rates;
      usdToForeignRates['USD'] = 1;
    });
  };

  refresh();

  return {
    currencies: currencies,
    convert: convert
  };
}]);

*******************************finance3.js*****************************
*******************************invoice3.js*****************************
angular.module('invoice3', ['finance3'])
.controller('InvoiceController', ['currencyConverter', function InvoiceController(currencyConverter) {
  this.qty = 1;
  this.cost = 2;
  this.inCurr = 'EUR';
  this.currencies = currencyConverter.currencies;

  this.total = function total(outCurr) {
    return currencyConverter.convert(this.qty * this.cost, this.inCurr, outCurr);
  };
  this.pay = function pay() {
    window.alert('Thanks!');
  };
}]);
*******************************invoice3.js*****************************

Comments

Post a Comment

Popular posts from this blog

Tutorial 12.12 Creating a Directive that Wraps Other Elements 3

-
******************************************INDEX.HTML***************************************************** <!doctype html> <html lang="en"> <head>   <meta charset="UTF-8">   <title>Example - example-directive-transclusion-scope-production</title>     <script src="//code.angularjs.org/snapshot/angular.min.js"></script>   <script src="script.js"></script>     </head> <body ng-app="docsIsoFnBindExample">   <div ng-controller="Controller">   {{message}}   <my-dialog ng-hide="dialogIsHidden" on-close="hideDialog(message)">     Check out the contents, {{name}}!   </my-dialog> </div> </body> </html> ******************************************INDEX.HTML***************************************************** ********************************************script.js*****************************...
Read more

Tutorial 12.14 Creating Directives that Communicate

-
******************************************INDEX.HTML***************************************************** <!doctype html> <html lang="en"> <head>   <meta charset="UTF-8">   <title>Example - example-directive-tabs-production</title>     <script src="//code.angularjs.org/snapshot/angular.min.js"></script>   <script src="script.js"></script>     </head> <body ng-app="docsTabsExample">   <my-tabs>   <my-pane title="Hello">     <p>Lorem ipsum dolor sit amet</p>   </my-pane>   <my-pane title="World">     <em>Mauris elementum elementum enim at suscipit.</em>     <p><a href ng-click="i = i + 1">counter: {{i || 0}}</a></p>   </my-pane> </my-tabs> </body> </html> ******************************************INDEX.HTML**...
Read more