Need to show Alert or Error Message in onCellEdit client script

[Indup]

HI All,

I have written a on CellEdit client script on incident table, when ever close notes is empty and close code is none, then it should not allow to closed the incident from the list view even. It is preventing incident closure but how to show an error message or alert to the user on the scrren.

My code:

Table: Incident

Field:State

Script:

function onCellEdit(sysIDs, table, oldValues, newValue, callback) {
var saveAndClose = true;
//Type appropriate comment here, and begin script below
var closeCode = g_form.getValue('close_code');
var closeNotes = g_form.getValue('close_notes');


if(closeCode == none || closeNotes == '' && oldValue != 3 && newValue == 3)

{
alert("Close the notes and code first");
saveAndClose = false;
}
else
{

saveAndClose = true;
}

callback(saveAndClose);
}

I am not able to see the Alert message

Can some one correct my code plz

Regards,

Indup

[Indup]

HI Pradeep,

I have written Before BR on Update, 

When to Run:

before : update

state changes to Closed

Script:

if(current.close_notes == '' || current.close_code == none)
{
gs.addInfoMessage("Close Notes and CLose Code need not be empty before Closure");
}

But even now it is not showing info message on incident list

Regards

Indup

[Pradeep Sharma]

Updated script below.

if(current.close_notes == '' || current.close_code == '')
{
gs.addInfoMessage("Close Notes and CLose Code need not be empty before Closure");
}

[Harsh Vardhan]

g_form works on the form. 

it will not work in the list . you can switch it to before business rule and add the filter condition 

and then in action tab set the message .