extJs Alert Help

var encClinic = new Ext.chart.StackedBarChart({
    store: new Ext.data.Store({
        reader:encReader,
        url:data.jsonUrl,
        baseParams:{
            cmd:'OHMjson.Graph',
            graphNam开发者_JAVA百科e:'ENC',
            graphType:'Clinics'
        }
    }),
    yField: 'CLINIC',
    xAxis: new Ext.chart.NumericAxis({
        stackingEnabled: true,
        title: text.occurrences
    })
});

1. I am displaying some values here, i need to debug by displaying an alert here whether the data retrieved are correct or not.

2. Can anyone explain me the code too.

---

Here is the code for what Lloyd is talking about. I have added an exception listener and a load listener for you. Since I don't have the data, the particulars of what is inside of records.data will probably need some tweaking to get it to work right for you.

var encClinic = new Ext.chart.StackedBarChart({
store: new Ext.data.Store({
    reader:encReader,
    url:data.jsonUrl,
    baseParams:{
        cmd:'OHMjson.Graph',
        graphName:'ENC',
        graphType:'Clinics'
    },
    listeners : {
          exception : function(misc) {
                 //Exception Handling Here
                 //Handle your  load failures here
          },
          load      : function(this, records, opts) {
                //evaluate to see if your data is "correct"
                alert(records.data.toString());
          }

}),
yField: 'CLINIC',
xAxis: new Ext.chart.NumericAxis({
    stackingEnabled: true,
    title: text.occurrences
})

});