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    Network Information API

    This is an experimental technology
    Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

    The Network Information API provides information about the system's connection, which is in term of general connection type (e.g., 'wifi', 'cellular', etc.). This can be used to select high definition content or low definition content based on the user's connection. The entire API consists of the addition of the NetworkInformation interface and a single property to the Navigator interface: Navigator.connection.

    Detecting connection changes

    This example watches for changes to the user's connection.

    var connection = navigator.connection || navigator.mozConnection || navigator.webkitConnection;
    var type = connection.type;
    function updateConnectionStatus() {
      alert("Connection type is change from " + type + " to " + connection.type);
    connection.addEventListener('typechange', updateConnectionStatus);


    Specification Status Comment
    Network Information API
    The definition of 'Network Information API' in that specification.
    Editor's Draft Initial specification

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support Not supported 12.0 Not supported Not supported Not supported
    Feature Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
    Basic support 2.2 webkit 12.0 1.4 Not supported Not supported Not supported

    Gecko notes

    • The Network API can be disabled using the dom.netinfo.enabled preference.

    See also

    Document Tags and Contributors

    Last updated by: kscarfone,