Angular模块仅适用于内联javascript

Angular module only works with inline javascript

本文关键字：javascript 适用于 模块 Angular      更新时间：2023-10-06

我正在学习Angular，只有当所有代码都在页面上内联时，才能向模块添加控制器。如果我用<script src="myModuleFile.js"></script>替换它，会失败

"错误：[$injector:unp]http://errors.angularjs.org/1.3.11/$injector/unp？p0=a提供商%20%3C-%20a%20%3C/%20人员控制器

var app = angular.module('app', [])
.config([function(injectables){
    console.log('configuring app');
}]).run([function(injectables){
    console.log('running app');
}]).controller("personController", function($scope){
    $scope.firstName = "John";
    $scope.lastName = "Doe";
});

<!DOCTYPE html>
<html ng-app="app">
    <head>
        <meta charset="UTF-8">
        <title></title>
        <link rel="stylesheet" href="web/stylesheets/app.css"/>
        <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.11/angular.min.js"></script>
        <!-- wont work if I include it this way -->
        <script src="web/js/app.min.js"></script>
        <!-- but works if I put it in here -->
        <script></script>
    </head>
    <body>
        <label>Name:</label>      
        <input type="text"  ng-model="yourName" placeholder="Enter a name here"><hr />      
        <h1>Hello {{ yourName }}!</h1>
        <div ng-init="firstName='John'">
            <p>The name is <span ng-bind="firstName"></span></p>
        </div>
        <p>My first expression: {{ 5 + 5 }}</p>
        <div ng-controller="personController">
            First Name: <input type="text" ng-model="firstName"><br>
            Last Name: <input type="text" ng-model="lastName"><br>
            <br>
            Full Name: {{firstName + " " + lastName}}
        </div>

         <div ng-init="names=[
            {name:'Jani',country:'Norway'},
            {name:'Hege',country:'Sweden'},
            {name:'Kai',country:'Denmark'}]">
            <ul>
              <li ng-repeat="x in names">
                {{ x.name + ', ' + x.country }}
              </li>
            </ul>
        </div>    
        <button ng-click="count = count + 1">Click me!</button>
        <p>{{ count }}</p> 
    </body>
</html>

正如Claies在评论中提到的，错误消息看起来像是试图为依赖项"a"找到提供程序，这可能是缩小的结果。

如果你喜欢：

angular.module(..).controller("SomeCtrl", function($scope){});

它可能会将$scope缩小为仅a。因此，您应该使用：

angular.module(..).controller("SomeCtrl", ["$scope", function($scope){}]);

因为字符串不会被缩小，Angular会知道哪个依赖项是哪个。另一种方法当然是使用$injector，正如Claies也提到的那样。

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