CODE EXAMPLE FOR JAVASCRIPT

merge json data in main.go in golang

func main() {

	// Let's first read the `config.json` file
	content, err := ioutil.ReadFile("./config.json")
	if err != nil {
		log.Fatal("Error when opening file: ", err)
	}

	// Now let's unmarshall the data into `payload`
	var payload Data
	err = json.Unmarshal(content, &payload)
	if err != nil {
		log.Fatal("Error during Unmarshal(): ", err)
	}