>>101551872
Correct. Doing for (line of veryBigString.split())
el.innerHTML += line
is slow.
Doing el.innerHTML += veryBigString
is not.
And doing let stringToConstruct = ''
for (item in things)
stringToConstruct += item
el.innerHTML += stringToConstruct
is also *not* slow.
I am testing with 140k elements here.