green fisher here again.
Here is my this time question:

can we use CSS file in javascript?

I indeed know how to do the that: **object.style = "";** 
however, if we can like do something really easy like: **import stylesheet.css**
then we can do something like **object.style = stylesheet.getStyleById('#something')**

well, those syntax above are all bullshit by my imagination, however, is there some similar way to do it?