diff --git a/Javascript.gitignore b/Javascript.gitignore
index 8b137891..abf9645a 100644
--- a/Javascript.gitignore
+++ b/Javascript.gitignore
@@ -1 +1,6 @@
+# Node.js, io.js, npm. see https://www.npmjs.com/
+node_modules/
 
+# spm. see http://spmjs.io/ and https://github.com/spmjs/spm
+spm_modules/
+sea-modules/