connection.type

檢查當前活動的網路連接。

說明

此屬性提供快速的方法來確定設備的網路連接狀態，和連線類型。

支援的平臺

  • iOS
  • Android 系統
  • 黑莓手機 WebWorks （OS 5.0 和更高）
  • Tizen
  • Windows Phone 7 和 8
  • Windows 8

快速的示例

function checkConnection() {
    var networkState = navigator.connection.type;

    var states = {};
    states[Connection.UNKNOWN]  = 'Unknown connection';
    states[Connection.ETHERNET] = 'Ethernet connection';
    states[Connection.WIFI]     = 'WiFi connection';
    states[Connection.CELL_2G]  = 'Cell 2G connection';
    states[Connection.CELL_3G]  = 'Cell 3G connection';
    states[Connection.CELL_4G]  = 'Cell 4G connection';
    states[Connection.CELL]     = 'Cell generic connection';
    states[Connection.NONE]     = 'No network connection';

    alert('Connection type: ' + states[networkState]);
}

checkConnection();

完整的示例

<!DOCTYPE html>
<html>
  <head>
    <title>navigator.connection.type Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova.js"></script>
    <script type="text/javascript" charset="utf-8">

    // Wait for device API libraries to load
    //
    document.addEventListener("deviceready", onDeviceReady, false);

    // device APIs are available
    //
    function onDeviceReady() {
        checkConnection();
    }

        function checkConnection() {
            var networkState = navigator.connection.type;

            var states = {};
            states[Connection.UNKNOWN]  = 'Unknown connection';
            states[Connection.ETHERNET] = 'Ethernet connection';
            states[Connection.WIFI]     = 'WiFi connection';
            states[Connection.CELL_2G]  = 'Cell 2G connection';
            states[Connection.CELL_3G]  = 'Cell 3G connection';
            states[Connection.CELL_4G]  = 'Cell 4G connection';
            states[Connection.CELL]     = 'Cell generic connection';
            states[Connection.NONE]     = 'No network connection';

            alert('Connection type: ' + states[networkState]);
        }

    </script>
  </head>
  <body>
    <p>A dialog box will report the network state.</p>
  </body>
</html>

API 更改

科爾多瓦 2.3.0，直到 Connection 物件的訪問通過 navigator.network.connection 後才改為其中, navigator.connection 以匹配的 W3C 規範。 它在其原始位置，是仍然可用，但已廢棄，最終將被刪除。

iOS 的怪癖

  • iOS 無法檢測到蜂窩網路連接的類型。
    • navigator.connection.type is set to Connection.CELL for all cellular data.

Windows Phone 怪癖

  • When running in the emulator, always detects navigator.connection.type as Connection.UNKNOWN.

  • Windows Phone 不能檢測的蜂窩網路連接的類型。

    • navigator.connection.type is set to Connection.CELL for all cellular data.

Tizen 怪癖

  • Tizen 只可以檢測一個 WiFi 或者蜂窩連接。
    • navigator.connection.type is set to Connection.CELL_2G for all cellular data.