基于Angular中ng-controller父子级嵌套的相关属性详解

来源：jb51　　时间：2018/10/10 8:46:07　　对本文有异议

ng-controller是为应用变量添加控制器

当有两个控制器father、child且child 在 father内，那child 可以称为子控制器，它将继承父控制器father的scope。child就可以访问到father的scope中的所有函数和变量。

例：

<div ng-controller="father">
 <div >name1:{{ name1 }}</div>
 <div ng-controller="child">name2:{{ name2 }}</div>
</div>

情况1：

app.controller("father",function ($scope) {
 $scope.name1 = "x";
 $scope.name2 = "y";
});

页面显示结果：

name1:x 
name2:y

情况2：

app.controller("child",function ($scope) {
 $scope.name1 = "a";
 $scope.name2 = "b";
});

页面显示结果：

name1: 
name2:b：

情况3：

app.controller("father",function ($scope) {
 if($scope.name1){
  $scope.name1 += "!";
  console.log($scope.name1);
 } else {
  $scope.name1 = "@";
  console.log($scope.name1);
 }
 
 if($scope.name2){
  $scope.name2 += "#";
  console.log($scope.name2);
 } else {
  $scope.name2 = "$";
  console.log($scope.name2);
 }
 
 console.log("father");
});
app.controller("child",function ($scope) {
 if($scope.name1){
  $scope.name1 += "%";
  console.log($scope.name1);
 } else {
  $scope.name1 = "^";
  console.log($scope.name1);
 }
 
 if($scope.name2){
  $scope.name2 += "&";
  console.log($scope.name2);
 } else {
  $scope.name2 = "*";
  console.log($scope.name2);
 }
 
 console.log("child");
});