This term is taken from the computer security field. A script kiddy is someone who grabs a program's source code off the net and runs it with very little to no understand as to the mechanics behind the program. In short, a script kiddy relies on someone else to do their work. Javascript allows one to redefine how objects in a web browser are controlled.
Scripts tend to run onto of a running program.
Scripter One who writes scripts. Programmer A programmer is one who can take a concept and turn it into reality on the computer. A programmer is someone who can express what need to be done in the form of a computer language. A programmer is capable of interpreting what other have expressed in the form of a program and make modifications to it if needed. A scripter, for all practicality, is a programmer.