Very Simple example templ go PKG

hello.templ

package main

templ hello(names []string) {
    <div>
        for _, name := range names {
            <div>Hello,{ name }</div>
        }
    </div>
}

main.go

// for start program
// intsall templ:  go install github.com/a-h/templ/cmd/templ@latest
// and go generate
// finaly run code : go run *.go

//go:generate templ generate
package main

import (
	"fmt"
	"net/http"

	"github.com/a-h/templ"
)

func main() {
	names := []string{"John", "Atlas", "Farhad"}
	component := hello(names)

	http.Handle("/", templ.Handler(component))

	fmt.Println("http://localhost:3000")
	_ = http.ListenAndServe("localhost:3000", nil)
}