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                ### 13.4. 表達式函數化 _$parse_ 這個服務,為 js 提供了類似于 Python 中 _@property_ 的能力: var TestCtrl = function($scope, $parse){ $scope.get_name = $parse('name'); $scope.show = function(){console.log($scope.get_name($scope))} $scope.set = function(){$scope.name = '123'} } _$parse_ 返回一個函數,調用這個函數時,可以傳兩個參數,第一個作用域,第二個是變量集,后者常用于覆蓋前者的變量: var get_name = $parse('name'); var r = get_name({name: 'xx'}, {name: 'abc'}); console.log(r); _$parse_ 返回的函數,也提供了相應的 assign 功能,可以為表達式賦值(如果可以的話): var get_name = $parse('name'); var set_name = get_name.assign; var r = get_name({name: 'xx'}, {name: 'abc'}); console.log(r); var s = {} set_name(s, '123'); var r = get_name(s); console.log(r);
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