diff --git a/.gitignore b/.gitignore
index 90c237f..aa17548 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 node_modules
+doc
 private.js
 mail.js
diff --git a/static/.gitignore b/static/.gitignore
new file mode 100644
index 0000000..7b4dcb5
--- /dev/null
+++ b/static/.gitignore
@@ -0,0 +1 @@
+js
diff --git a/utils/check.sh b/utils/check.sh
new file mode 100755
index 0000000..7a69393
--- /dev/null
+++ b/utils/check.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+cd ..
+jshint `find . -name "*.js" | grep -v -e "^./node_modules/" -e "^./js/" -e "./static/" -e "^./doc/" -e "\.min\.js$"| grep -v analyse.js`
+jshint js/l3d