Initial trial and error draft of using gopherjs.

jsexport/Makefile

@@ -0,0 +1,25 @@
+PROJECTNAME=jsexport
+ROOT_DIR=.
+all: help
+## Available proxies for downloading go modules are listed in "https://github.com/golang/go/wiki/Modules#how-do-i-use-vendoring-with-modules-is-vendoring-going-away". 
+#GOPROXY=https://mirrors.aliyun.com/goproxy 
+GOPROXY=https://goproxy.io
+
+serve:
+	gopherjs serve $(PROJECTNAME)
+
+build:
+	gopherjs build $(PROJECTNAME)
+
+build-min:
+	gopherjs build -m $(PROJECTNAME)
+
+.PHONY: help
+
+help: Makefile
+	@echo
+	@echo " Choose a command run:"
+	@echo
+	@sed -n 's/^##//p' $< | column -t -s ':' |  sed -e 's/^/ /'
+	@echo
+