asp.net core jquery if condition based on Model bool

I have two situation where either data exists or have to be manually entered. I want to be able to disable or enable button based on text value lenght

View

                    

                        Activity:
                    
                    @if (Model.JSAActivity != null)
                    {
                        

                            @Html.DisplayFor(model => model.JSAActivity)
                        
                    }
                    else
                    {
                        

                            
                        
                    }

                

jquery

$(function () {
            $("#DivAddData").on("change", function () {
                var minLenght = 3;

                var ia1 = $("#InpAct1").val().length;
                var ia2 = $("#InpAct2").val().length;
                var hd = $("#hazDetail").val().length;
                var ic = $("#InpCont").val().length;
                var ir = $("#InpResp").val().length;

                if (ia1 > minLenght || ia2 > minLenght && hd > minLenght && ic > minLenght && ir > minLenght) {
                    $("#btnSubmitAD").attr("disabled", false);
                }
                else {
                    $("#btnSubmitAD").attr("disabled", true);
                }
            });
        });