Helping my son (8) learn coding. Is there a javascript program similar to Eclipse to code in java script?

I went to school for computer science from 2004-2008 but never really used it in the business world (got a job as a systems administrator instead) so my coding skills are not really up to snuff. I can pseudo code just fine, but it’s been a long time since I actually wrote a program. My son, 8, is learning Java script on Khan academy, and he wants me to help him code a game. I, through strained memory, downloaded eclipse, and started a project, only to find out Java script (at least how it is implemented on Kahn academy) is very different from java. Is there a way to code in javascript in eclipse, or something similar?