Question

我运行Cordova示例项目并想测试Cordova API，但是，即使cordova.js嵌入index.html，似乎也无法使用API。这是代码

        <script type="text/javascript" src="cordova.js"></script>
        <script type="text/javascript" src="js/index.js"></script>
        <script type="text/javascript">
            app.initialize();
            notification.all();
        </script>

在index.js中：

var app = {
    // Application Constructor
    initialize: function() {
        this.bindEvents();
    },
    // Bind Event Listeners
    //
    // Bind any events that are required on startup. Common events are:
    // 'load', 'deviceready', 'offline', and 'online'.
    bindEvents: function() {
        document.addEventListener('deviceready', this.onDeviceReady, false);
        //
    },
    // deviceready Event Handler
    //
    // The scope of 'this' is the evheyent. In order to call the 'receivedEvent'
    // function, we must explicitly call 'app.receivedEvent(...);'
    onDeviceReady: function() {
        app.receivedEvent('deviceready');
    },
    // Update DOM on a Received Event
    receivedEvent: function(id) {
        var parentElement = document.getElementById(id);
        var listeningElement = parentElement.querySelector('.listening');
        var receivedElement = parentElement.querySelector('.received');

        listeningElement.setAttribute('style', 'display:none;');
        receivedElement.setAttribute('style', 'display:block;');

        alert('Received Event: ' + id);
    }
};

var notification={

   all:function (){alert(navigator.connection.type);}

}

错误是＆＃34;无法读取属性＆＃39;键入＆＃39;未定义＆＃34;

Answer 1

由于您在我的其他答案之后发布了您的代码，而不是更改我以前的帖子，我正在写一个新的答案。

Javascript是异步的，因此在执行app.initialize（）调用时，也会在触发deviceready之前执行notification.all（）调用。在任何情况下，你的初始化调用只会为deviceready添加监听器，然后你可以在获得deviceready之前调用你的all（）函数。

不能在示例项目中使用Cordova API

1 个答案: