基于Angular中ng-controller父子级嵌套的相关属性详解

2019-11-19 12:46:10

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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");});

控制台打印结果：