can javascript run faster?

[totally beginner]

i have a javascript code that huge enough (because so many loop & create new element:p ).

does anyone know how to make a javascript program can run faster?:rolleyes:

does anyone know/have program that can simplify my javascript program (maybe a program that automatically remove something not important in javascript code like remarks & indentation) so my javascript program's size can be smaller and faster to load from internet?