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    TelephonyCall.onstatechange

    Non-standard
    This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.

    This API is available on Firefox OS for internal applications only.

    The onstatechange event handler of the TelephonyCall interface is a reference to a function to be called to handle the Telephony API's statechange event.

    This event occurs whenever the value of TelephonyCall.state changes. The event handler is called with a CallEvent as its only parameter.

    Examples

    // Telephony object
    var tel = navigator.mozTelephony;
    
    // Place a call
    tel.dial("123456789").then(function(call) {
      call.number;
    
      call.onstatechange = function(e) {
        console.log('Your call has changed state to ' + e.call.state);
      }
    });

    Specifications

    Specification Status Comment
    Web Telephony Draft Draft.

    Browser compatibility

    For obvious reasons, support is primarily expected on mobile browsers.

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support Not supported Not supported Not supported Not supported Not supported
    Feature Android Firefox Mobile (Gecko) Firefox OS (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support Not supported 12.0 (12.0) 1.0.1 Not supported Not supported Not supported

    See also

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