now i tried this script, where i added it to the miscellaneous tab , where i replaced the drop-down field with the Title field to eliminate the problem of internal name VS display name:-

now the above script have partially worked, where i can see these issues now:-

1. the defualt value will not be shown unless i enter a value for one field inside the new row. So is there a way to allow the defualt value to be shown directly once i click on "edit this list" >> and i navigate on a new row inside the grid ?

2. now when i replace the Title with the TrackingStatus the script will not populate any defualt values for the TrackingStatus dropdwon choices. so I am not sure if the problem is with trying to populate default values for drop-down field? or the problem that in the drop-down field case the field internal name = TrackingStatus while the display name = Tracking Status unlike the title which have the same internal and display name , if so then can you adivce where i need to specify the internal name and where i need to specify the display name inside the script?

Now i tried this script, where i added it to the miscellaneous tab , and where i replaced the drop-down field with the Title field to eliminate any problem related to the field's internal name VS display name:-

now the above script have worked partially, where i can see these issues now:-

1. the defualt value will not be shown unless i enter a value for one field inside the new row. So is there a way to allow the defualt value to be shown directly once i click on "edit this list" >> and i navigate to the new row inside the grid ?

2. now when i replace the Title with the TrackingStatus the script will not populate any defualt values for the TrackingStatus dropdwon choices. so I am not sure if the problem is related to setting a defualt value for a drop-down field? or the problem that in my TrackingStatus drop-down field case the field internal name = TrackingStatus while the display name = Tracking Status unlike the title which have the same internal and display name , if so then can you adivce where i need to specify the internal name and where i need to specify the display name inside the script?

EDIT.

now i tried this script, where i added it to the miscellaneous tab , where i replaced the drop-down field with the Title field to eliminate the problem of internal name VS display name:-

(function () {

    var overrideCtx = {};
    overrideCtx.Templates = {}; 
    overrideCtx.Templates.OnPreRender = function(ctx) {
        if (!ctx.inGridMode)
        {
            return;
        }
        var statusField = ctx.ListSchema.Field.filter(function(f) {
            return f.Name === 'Title';
        });
        if (statusField.length > 0) {
            for (var i = 0; i < ctx.ListData.Row.length; i++)
            {
                if (ctx.ListData.Row[i].Title == "")
                {               
                    ctx.ListData.Row[i].Title = "Test123";
                }               
            }            
        }
    };

    SPClientTemplates.TemplateManager.RegisterTemplateOverrides(overrideCtx);
})();

SP.SOD.executeFunc('clienttemplates.js', 'SPClientTemplates.TemplateManager.RegisterTemplateOverrides', function() {
        var alreadyAttachedEvent = false;
        SPClientTemplates.TemplateManager.RegisterTemplateOverrides({
            OnPostRender: function(ctx) {               
                if (ctx.enteringGridMode || !ctx.inGridMode || alreadyAttachedEvent)
                  return;
                var jsGrid = null;
                for(var v in g_SPGridInitInfo)
                {
                    var jsGridContainer = $get("spgridcontainer_" + g_SPGridInitInfo[v].jsInitObj.qualifier);
                    var jsGrid = jsGridContainer.jsgrid;
                    break;
                }

                jsGrid.AttachEvent(SP.JsGrid.EventType.OnCellEditCompleted, function(args) {
                    var rec = jsGrid.GetRecord(args.recordKey);
                    if (!rec.properties["Title"].localizedValue)
                    {
                        var update = SP.JsGrid.CreateUnvalidatedPropertyUpdate(args.recordKey,'Title',"Test123",false);
                        jsGrid.UpdateProperties([update], SP.JsGrid.UserAction.UserEdit);
                    }
                });
                alreadyAttachedEvent = true;
            }
        });
    
 });

now the above script have partially worked, where i can see these issues now:-

1. the defualt value will not be shown unless i enter a value for one field inside the new row. So is there a way to allow the defualt value to be shown directly once i click on "edit this list" >> and i navigate on a new row inside the grid ?

2. now when i replace the Title with the TrackingStatus the script will not populate any defualt values for the TrackingStatus dropdwon choices. so I am not sure if the problem is with trying to populate default values for drop-down field? or the problem that in the drop-down field case the field internal name = TrackingStatus while the display name = Tracking Status unlike the title which have the same internal and display name , if so then can you adivce where i need to specify the internal name and where i need to specify the display name inside the script?

I am working on a list view, which have a choices column named "TrackingStatus". now for this choice column i define its default value to be "In Progress" insie the site columns settings.

but i have noted that inside the Quick edit grid the deault value for the "TrackingStatus" column will not be rendered (unlike inside the built-in create and edit forms).. so i tried to implement the default values using js link as follow:-

1- I upload the following script inside my site collection  :-

(function () {
    alert("1");
    var overrideContext= {};

    overrideContext.Templates = overrideContext.Templates || {};

    overrideContext.Templates.Fields = {
        "TrackingStatus": {
            "View": function (ctx) {if(ctx.CurrentItem.your_column == "")
        return "In Progress";
}
        }
    };

    SPClientTemplates.TemplateManager.RegisterTemplateOverrides(overrideContext);

})();

2- Then i edit my list view webpart and i provide the following to reference the above js link under the WebPart Miscellaneous section  :-

~sitecollection/Resources/defaultvalues.js

but the jslink is not having any effect in respect to applying default values for my column, although when i checked the page source i can see that the defaultvalues.js is being loaded and i got the alert(1) which i intentionaly add inside the JsLink.. .. so can anyone advice how i can define default values for my choices columns inside the Quick Edit grid  ?

I am working on a list view, where i have a choice column named TrackingStatus. Now for this choice column i defined the default value to be In Progress from the site columns settings.

But i have noticed that inside the Quick edit grid the default value for the TrackingStatus column will not be rendered (unlike inside the built-in create and edit forms).. so i tried to implement the default values using JS Link as follow:

I upload the following script inside my site collection:

(function () {
    alert("1");
    var overrideContext= {};

    overrideContext.Templates = overrideContext.Templates || {};

    overrideContext.Templates.Fields = {
        "TrackingStatus": {
            "View": function (ctx) {if(ctx.CurrentItem.your_column == "")
        return "In Progress";
}
        }
    };

    SPClientTemplates.TemplateManager.RegisterTemplateOverrides(overrideContext);

})();

Then I edit my list view WebPart and I provide the following to reference the above JSlink under the WebPart Miscellaneous section.:

~sitecollection/Resources/defaultvalues.js

But the JS Link is not having any effect in respect to applying default values for my column, although when I checked the page source I can see that the defaultvalues.js is being loaded and i got the alert(1) which I intentionally added inside the JS Link.

How can I define default values for my choices columns inside the Quick Edit grid?