Example analysis of Go multivalued substitution templates

This article analyzes the use of HTML templates for multivalued substitution in the Go language. Share with you for your reference. The details are as follows:

There are two ways to provide mutable value substitution based on the HTML template. Appends an example of an array iteration.

Pass map to implement multi-value substitution

package main

import (

 "html/template"

 "os"

)

func main() {

 t, _ := template.New("demo").Parse(`{{define "T"}}Hello, {{.Username}}! Main Page: [{{.MainPage}}]{{end}}`)

 args1 := map[string]string {"Username": "Hypermind", "MainPage": "http://hypermind.com.cn/go"}

 _ = t.ExecuteTemplate(os.Stdout, "T", args1)

}

Pass in a custom structure to implement multivalue substitution

package main

import (

 "html/template"

 "os"

)

type Info struct{

 Username string

 MainPage string

}

func main() {

 t, _ := template.New("demo").Parse(`{{define "T"}}Hello, {{.Username}}! Main Page: [{{.MainPage}}]{{end}}`)

 args2 := Info{Username: "Hypermind", MainPage: "http://hypermind.com.cn/go"}

 _ = t.ExecuteTemplate(os.Stdout, "T", args2)

}

Iterative display of a 2-dimensional array

package main

import (

 "html/template"

 "os"

)

type Matrix struct {

 Array [9][9]int

}

func main() {

 tmpl, _ := template.New("example").Parse(`

        {{ $a := .Array }}

        {{ range $a }}{{ $elem := . }}|{{ range $elem }}{{ printf "%d" . }}{{ end}}|

        {{end}}`)

 tmpl.Execute(os.Stdout, matrix)

}

I hope this article has been helpful to your programming of Go language.