How to add Gameobject to script without drag a prefab from assests?

Questions & Answers
1

This might be a silly question. Is there a another way to do it? (in java script)

EDIT!!!

This is my main problem.
in script A I use this code.

gameObject.AddComponent("B");//Add script name B

in script B I use this code.

var weapon:GameObject;//and I drag prefab name missile to this script.

The problem is. When I run the game. It add script name B as it should be,but in script B variable weapon is empty, not prefab name missile as it should be.

2