// +build go1.11beta2 package main import ( "fmt" "syscall/js" "time" ) func main() { // GOARCH=wasm GOOS=js /home/$yourusername/go1.11beta1/bin/go build -o hello.wasm hello_go11beta2.go js.Global().Get("console").Call("log", "Hello WebAssemply!") message := fmt.Sprintf("Hello, the current time is: %s", time.Now().String()) js.Global().Get("document").Call("getElementById", "hello").Set("innerText", message) }