var url=("https://xxxxx.firebaseio.com/ saveReport.json");
    console.log('ffff1');
    var ref = new firebase('https://xxxxx.firebaseio.com');
    console.log('ffff2');
    // var url=('https://pwa-cssi.firebaseio.com/saveReport.json/Y6pCoSYnHmRP2wyITSoibY263RT2');
    ref.orderByChild("saveReport/userid").equalTo(true).on("value",
    function(snapshot){
         console.log(snapshot.numChildren());
    })