轉載出處：http://www.cnblogs.com/liulangmao/p/3714209.html
<!DOCTYPE html> <html ng-app> <head> <title>2.3.2計算階乘實例1</title> <meta charset="utf-8"> <script src="../angular.js"></script> <script src="script.js"></script> </head> <body> <div ng-controller = 'Factorial'> <form action=""> <input type="text" ng-model="factorial.number" ng-change="compute()"/> 的階乘結果是: <span>{{factorial.result}}</span> </form> </div> </body> </html>
function Factorial ($scope) { $scope.factorial = {}; $scope.factorial.number = 0; $scope.factorial.result = 1; $scope.factorialNum = function(num){ if(num==0){ return 1; } else { return num*$scope.factorialNum(--num); } }; $scope.compute = function(){ $scope.factorial.result = $scope.factorialNum($scope.factorial.number); } }
1.ng-model:
將input元素與factorial.number進行綁定
2.ng-change:
給input元素的change事件綁定回調函數爲compute方法
3.{{factorial.result}}
compute方法會通過factorial.number的值計算factorial.result的值,然後factorial.result的值是和ui進行綁定的.所以,input的value值改變時,span中相應的值也會改變
