In precisely the same way as. For example, He's signing his name just as he's always done it. [Early 1600s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
How to use just as in a sentence
One of those just-as-good homes which are never as satisfactory as the real kind.The Adventures of Sally | P. G. Wodehouse
I am glad there is one continent on which the "I'm-just-as-good-as-you-are" nightmare does not curse the whole land.Our Vanishing Wild Life | William T. Hornaday
Then just as startling, just-as unprovable as the flash of a shooting star, her glance flashed up at Barton.Little Eve Edgarton | Eleanor Hallowell Abbott