diff --git a/scripts/run-js-tests.sh b/scripts/run-js-tests.sh
new file mode 100755
index 0000000..229da2f
--- /dev/null
+++ b/scripts/run-js-tests.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+# Run either as:
+# ./scripts/run-js-tests.sh
+# ./scripts/run-js-tests.sh reversed
+
+
+if [ "$1" == 'reversed' ]; then
+  files=$(ls tests/js/*-test.js | perl -e 'print reverse <>')
+else
+  files=$(ls tests/js/*-test.js)
+fi
+
+./node_modules/.bin/mocha --compilers .:tests/js/preprocessor.js $files
diff --git a/scripts/travis-test.sh b/scripts/travis-test.sh
index 85da9f1..d86b2ec 100755
--- a/scripts/travis-test.sh
+++ b/scripts/travis-test.sh
@@ -5,7 +5,10 @@ set -o errexit
 . ./ENV.sh
 nosetests tests/python
 
-npm test
+./scripts/run-js-tests.sh
+echo 'Running tests in reverse...'
+./scripts/run-js-tests.sh reversed
 
+echo 'Linting...'
 ./scripts/lint.sh
 ./scripts/travis-coverage.sh