comparison operators

Signed-off-by: Andy-Shao <hj13035952619@126.com>
error

Signed-off-by: Andy-Shao <hj13035952619@126.com>
debugging

Signed-off-by: Andy-Shao <hj13035952619@126.com>
hoisting

Signed-off-by: Andy-Shao <hj13035952619@126.com>
use strict

Signed-off-by: Andy-Shao <hj13035952619@126.com>