setting logged username by using client script

[Community Alums]

Hello folks ,

I have a field name called "user" this field is referenced to "sys_user" table . Now i would like to write a client script to setValue default logged user name in this field .

Is there any way to set the value by using client scripts ? Because when i try to write   below script is hitting error .

function onLoad() {
var uval = g_form.getValue('req_by_for_requested_by') ;
if (uval == '')
{
var user = ga.addQuery('user_name',gs.getUserName());
g_form.setValue(user) ;
//alert(uval); 
}
}

[BHUSHAN KEWAT]

• Use this script:

function onLoad() {  

g_form.setValue('user', g_user.userID) ;    

 }