ng-repeat指令的使用方式可以参考如下代码：
<!doctype html><html lang="en"><head><meta charset="utf-8"><title>ng-repeat</title><script src="jquery-1.11.1.js"></script><script src="angular-1.2.25.js"></script><script>function wholeController($scope,$rootScope,$injector){$scope.buttons = ["button1","button2","button3"];$scope.btnFunc = function(value){alert(value);};}</script> </head><body ng-app><div id="first" ng-controller="wholeController"><div id="buttonDiv"><input type="button" ng-repeat="button in buttons" id="btn{{$index}}" value="{{button}}" ng-click="btnFunc(button);"/></div><input type="button" value="test" ng-click="testFunc();"></div></body></html>
这里需要注意：ng-click中访问button不需要使用{{button}}这种语法；而其他非angularjs环境下，必须通过{{button}}这种方式取值。ng-repeat指令中$index代表遍历的数组的索引，，从0开始。
我们知道ng-controller指令会创建一个新的作用域scope，测试代码如下：
<!doctype html><html lang="en"><head><meta charset="utf-8"><title>ng-repeat</title><script src="jquery-1.11.1.js"></script><script src="angular-1.2.25.js"></script><script>//$scope是ng-controller指令新建的作用域function wholeController($scope,$rootScope,$injector){alert($scope.$parent === $rootScope);//输出true}</script> </head><body ng-app><div id="first" ng-controller="wholeController"></div></body></html>
我们可以使用angular.element(domElement).scope()方法来获得某一个DOM元素相关联的作用域。<!doctype html><html lang="en"><head><meta charset="utf-8"><title>ng-repeat</title><script src="jquery-1.11.1.js"></script><script src="angular-1.2.25.js"></script><script>function wholeController($scope,$rootScope,$injector){$scope.buttons = ["button1","button2","button3"];$scope.testFunc = function(){//拿到dom元素上关联的作用域var scope0 = angular.element($("#btn0")[0]).scope();var scope1 = angular.element($("#btn1")[0]).scope();alert(scope0 == scope1);//输出falsealert(scope0.$parent === $scope);//truealert(scope1.$parent === $scope);//true};}</script> </head><body ng-app><div id="first" ng-controller="wholeController"><div id="buttonDiv"><input type="button" ng-repeat="button in buttons" id="btn{{$index}}" value="{{button}}" /></div><input type="button" value="test" ng-click="testFunc();"></div></body></html>
可以看到ng-repeat指令会新建作用域，而且是为循环中的每个dom元素新建一个作用域。通过F12调试，可以看到scope0和scope1的内容如下：
可以看到scope0和scope1中都有一个buttons属性，这个属性就是从父作用域下继承得到的，很类似于javascript的原型链。
<!doctype html><html lang="en"><head><meta charset="utf-8"><title>ng-repeat</title><script src="jquery-1.11.1.js"></script><script src="angular-1.2.25.js"></script><script>function wholeController($scope,$rootScope,$injector){$scope.buttons = ["button1","button2","button3"];$scope.method1 = function(){var scope0 = angular.element($("#btn0")[0]).scope();scope0.buttons = ["a1","b1","c1"];};$scope.method2 = function(){var scope0 = angular.element($("#btn0")[0]).scope();scope0.$parent.buttons = ["a2","b2","c2"];};$scope.method3 = function(){var scope0 = angular.element($("#btn0")[0]).scope();scope0.buttons[0] = "a3";scope0.buttons[1] = "b3";scope0.buttons[2] = "c3";};}</script> </head><body ng-app><div id="first" ng-controller="wholeController"><div id="buttonDiv"><input type="button" ng-repeat="button in buttons" id="btn{{$index}}" value="{{button}}" /></div><input type="button" value="method1" ng-click="method1();"><input type="button" value="method2" ng-click="method2();"><input type="button" value="method3" ng-click="method3();"></div></body></html>当点击method1、method2、method3的时候，我们希望将按钮button1、button2、button3替换掉。运行上面的代码可以发现：method2和method3都能成功达到目的，但是method1不能达到目的。这其实很类似C语言中传值，还是传引用的问题。var obj = {"name":"aty"};wrongChangeName(obj);alert(obj.name);//仍然是atyrightChangeName(obj);alert(obj.name);//hehefunction rightChangeName(obj){obj.name="hehe";}function wrongChangeName(obj){obj = {"name":"hehe"};}wrongChangeName就类似于我们上面的method1，而rightChangeName类似于上面的method3。也就是说如果我们想在childScope中修改parentScope中某个属性的值，那么该属性一定不能是javascript基本数据类型，一定要是对象类型。而且不能直接通过=进行赋值修改，必须是调用对象的方法来修改。
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