$scope represents the intermediate bridge between the view and the data model: objects in the scope domain can be shared by both model and view, and the data is bidirectionally synchronized. The scope of the controller: is mainly responsible for data processing of elements wrapped by the controller tag. If the child If an element nests a Controller, the controller of the corresponding sub-element will be the one closest to the sub-element (this principle of closest effect is also reflected in the Jmeter testing framework and avalon's ms-controller)
HTML text:
<!-- 指定应用名及控制器 -->
<body ng-app="myApp">
<div ng-controller="myCtrl01">
<p>myCtrl01的作用域</p>
名: <input type="text" ng-model="firstName"><br>
姓: <input type="text" ng-model="lastName"><br>
<br>
姓名: {{firstName + " " + lastName}}
<hr/>
<p>myCtrl02的作用域</p>
<div ng-controller="myCtrl02">
名: <input type="text" ng-model="firstName"><br>
姓: <input type="text" ng-model="lastName"><br>
<br>
姓名: {{firstName + " " + lastName}}
</div>
</div>
Javascript operation code:
//定义应用的控制器，负责具体数据处理：
//定义angular应用的名称：myApp:一个html中只有一个应用，如果存在多个以第一个为准
var app = angular.module('myApp', []);
app.controller('myCtrl01', function($scope) {
/* 后台向scope域中存放对象：页面存放的标签：
* ng-init 初始化变量
* ng-model:初始化变量并进行数绑定
*/
$scope.firstName= "John";
$scope.lastName= "Doe";
});
app.controller('myCtrl02', function($scope) {
$scope.firstName= "Hello";
$scope.lastName= "Python";
});
Effect:
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