For Loop in Kendo Grid Template

Question

I've a big trouble with Kendo Grid.

If I use a for loop as client template as this

col.Bound(m => m.Compteurs)
    .ClientTemplate("# for (var i=0;i<4;i++) { console.log(i) } #");

i is never incremented. Same with while loop and increment inside loop.

how to resolve this ?

Thank you

EDIT - Full declaration of Grid :

@(Html.Kendo().Grid<EAGLE.Models.ParamUf>()
.Name("ParamGrid")
.Columns(col =>
    {
        col.Bound(m => m.Groupement);
        col.Bound(m => m.Etablissement).ClientTemplate("#= Etablissement.EtablissementName #");
        col.Bound(m => m.Service).ClientTemplate("#= Service.ServiceName #");
        col.Bound(m => m.Discipline).ClientTemplate("#= Discipline.DisciplineName #");
        col.Bound(m => m.Unite).ClientTemplate("#= Unite.UniteName #");
        col.Bound(m => m).ClientTemplate(Html.Partial("_Tel").ToHtmlString());
        col.Bound(m => m.Unite.TypeHebergement).Title("Hébergement");
        col.Bound(m => m.Installe);
        col.Bound(m => m.Ferme);
        col.Bound(m => m.Compteurs).ClientTemplate("# for (var i=0;i<4;i++) { console.log(i) } #");        
        col.Command(commands =>
        {
            commands.Edit().UpdateText("Mettre à jour").CancelText("Annuler").Text("Edit");
            commands.Destroy().Text("Suppr.");
        }).Title(string.Empty).Width(160);

    }
)
.DataSource(data => data
                .Ajax()
                .Read(read => read.Action("Param_Read", "Param", new { entityCode = @ViewBag.Code, entityType = @ViewBag.Type }).Data("filterUnit"))
                    .Model(m => 
                    {
                        m.Id(a => a.Unite.UniteCode);
                        m.Field(a => a.Etablissement).DefaultValue(new EAGLE.Models.Etablissement());
                        m.Field(a => a.Service).DefaultValue(new EAGLE.Models.Service());
                        m.Field(a => a.Discipline).DefaultValue(new EAGLE.Models.Discipline());
                        m.Field(a => a.Unite).DefaultValue(new EAGLE.Models.Unite());
                    }) 
                .Create(cre => cre.Action("Param_Create", "Param"))
                .Update(upd => upd.Action("Param_Update", "Param"))
                .Destroy(des => des.Action("Param_Destroy", "Param"))
                .Batch(false)
                .ServerOperation(false))
.Pageable(pager => pager
    .Enabled(false)        
    .Messages(m => m.Display("Nombre total d'hébergement : {2}"))
    .Messages(m => m.Empty("Pas d'hébergement."))
    .PreviousNext(false)
    .Input(false)
    .Numeric(false))   
.ToolBar(toolbar => { toolbar.Create(); })
.Editable(ed => ed.Mode(GridEditMode.PopUp).TemplateName("_ParamEdit"))
.Events(e => e.DataBound("onDatabound"))
)

Answer 1

For the next that have this issue, you can resolve by different way.

1st way (tricky) : Add javascript function increment

function increment(a) 
{
   return a++;
}

And use it in template

col.Bound(m => m.Compteurs)
    .ClientTemplate("# for (var i=0;i<4;increment(i)) { console.log(i) } #");

2nd way by c# code (include this between col.Bound) :

    int i = 0;
    foreach (EAGLE.Models.Compteur c in ViewBag.Compteurs)
    {
        col.Bound(m => m.Compteurs[i].Dispo).Title(c.NomCourt)
            .HtmlAttributes(new { style = String.Format("background-color:\\#{0}", c.Color), @class = "compteur" })
            .HeaderTemplate("<img class='iconeHeader' src='data:image/png;base64," + c.Picto + "' title='"+ c.Nom +"' />");
        i++;
    }

3rd way (Matthew's Answer) :

 var template = "# for (var i=0;i<4;i++) { console.log(i) } #";
 var plusEncoded= System.Web.HttpUtility.UrlEncode("+"); 
 template = Regex.Replace(template, @"[+]", plusEncoded);
 col.Bound(m => m.Compteurs).ClientTemplate(template);

Answer 2

It seems + or ++ are removed when used in Partial views with Kendo controls. There is another workaround for this issue:

col.Bound(m => m.Compteurs)
    .ClientTemplate("# for (var i = 4; i > 0; i--) { console.log(i) } #");

hope this helps