CreateElement with id?

I'm trying to modify this code to also give this div item an ID, however I have not found anything on google, and idName does not work. I read something about append, however it seems pretty complicated for a task that seems pretty simple, so is there an alternative? Thanks :)

g=document.createElement('div'); g.className='tclose'; g.v=0;

You should use the .setAttribute() method:

g = document.createElement('div');
g.setAttribute("id", "Div1");

You can use g.id = 'desiredId' from your example to set the id of the element you've created.

var g = document.createElement('div');
g.id = 'someId';