Help write a loop that makes 7 calls to console. log?

Question

I need help in writing a loop that makes 7 calls to console.log to output a string in the form of a triangle like this:
#
##
###
####
#####
######
#######
Any ideas are welcome. Thanks!

Answer 1

for(var line = "#" ; line.length < 8 ;line += "#") {
console.log(line)
}

Answer 2

What is line.length

Answer 3

it s unternal function

Answer 4

internal function