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dhxGrid

Good evening, I have the following problem if comment alert ( "grid") comes out an error "this.obj.firstChild is null" but if I enable alert (grid) works
thanks,

setGrid();
setGriglia(ricattesa);



function setGrid() {
    dhxGrid = dhxLayout.cells("a").attachGrid();    
    dhxGrid.setImagePath(patdhtmlxGrid);        
    dhxGrid.attachEvent("onRowSelect", getRigaGrid);
    dhxGrid.attachEvent("onEditCell", doOnCellEdit);
    dhxGrid.attachEvent("onEnter", doOnEnter);
    dhxGrid.attachEvent("onRightClick", function(id, ind, obj) {
         alert("Row with id-ind-obj="+id+ind+obj);
            
    dhxGrid.attachHeader("<div id='title_flt' style='padding-right:3px'></div>,"
                     + "#rspan,#rspan,#rspan");
    dhxGrid.loadXML(patxmlgrid,
            function() {
            // set titolo filtro field
                var authFlt = document.getElementById("title_flt")
                             .appendChild(document.getElementById("title_flt_box").childNodes[0]);
                dhxGrid.hdr.rows[2].onmousedown = dhxGrid.hdr.rows[2].onclick = function(e) {
                                                    (e || event).cancelBubble = true;}
                dhxGrid.setSizes();
            });    
}


function setGriglia(ricattesa){
    inResp = new Array();
    
    inResp[0]="Lunedì";
    inResp[1]="Martedì";
    inResp[2]="Mercoledì";
    inResp[3]="Giovedì";
    inResp[4]="Venerdì";
    inResp[5]="Sabato";
    inResp[6]="Domenica";


    alert("Griglia"); <<<<<<--------------------------------------- ok no error

//alert("Griglia"); <<<<<<--------------------------------------- no ok error


    
    for (var i = 0; i < inResp.length; i++) {
     canc = "#";
     dhxGrid.addRow(i + canc + inResp[i], inResp[i] + "," + // metodi dentro file java Filevo
inResp[i] + "," + inResp[i] + "," + inResp[i]
+ "," + "path"
);
    
     dhxGrid.setUserData(i + inResp[i], "name", inResp[i]);
}
}

============================================
errore
============================================

this.obj.firstChild is null
anonymous(tr., Object name=ind value=0, Object name=skip)dhtmlxgrid.js (riga 729)
anonymous("0#Lunedì", ["Lunedì", "Lunedì", "Lunedì", 2 more... 0=Lunedì 1=Lunedì 2=Lunedì 3=Lunedì 4=path], Object name=ind value=0)

In your code, configuration is loaded from XML, and row adding will not be processed correctly if it will be executed before configuration loading. 
The data loading is async. , so you need to wait for it before adding rows. 


setGrid();
// setGriglia(ricattesa);  - too early
...
  
dhxGrid.loadXML(patxmlgrid,function() { 
    // set titolo filtro field
    var authFlt = document.getElementById("title_flt")
    .appendChild(document.getElementById("title_flt_box").childNodes[0]);
    dhxGrid.hdr.rows[2].onmousedown = dhxGrid.hdr.rows[2].onclick = function(e) {
    (e || event).cancelBubble = true;}
    dhxGrid.setSizes();

    setGriglia(ricattesa); //can be safely executed
});