The name divcity does not exist in the current context

it does

i do get it in alert

Try this

document.getElementById('divcity').style.display = a.toUpperCase() == "CITY" ? "block" : "none";

no i am not getting as need

if i use just teh above line in  script

when page is loaded first time the div with driopdown with data is visible

when i click on teh cell header initating the script with above line

it disappears

the opposite shld happen

So simply change condition

document.getElementById('divcity').style.display = a.toUpperCase() != "CITY" ? "block" : "none";

with that

the issue is

even on page load thats  without the script getting exceuted its displayed