gopherjs基本用法 - Thu, Jul 29, 2021

gopherjs基本用法

1. hello world

JS

alert('Hello World!')

GO

package main

import "github.com/gopherjs/gopherjs/js"

func main() {
	js.Global.Call("alert", "Hello World!")
}

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2. 操作DOM

JS

document.write('Hello World!')

GO

package main

import "github.com/gopherjs/gopherjs/js"

func main() {
	js.Global.Get("document").Call("write", "Hello world!")
}

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3. 输出日志

JS

console.log('Hello World!')

GO

package main

import (
	"fmt"

	"github.com/gopherjs/gopherjs/js"
)

type User struct {
	Name string
	Age  int
}

func main() {
	user := User{
		Name: "小明",
		Age:  10,
	}
	js.Global.Get("console").Call("log", "Hello world!")
	js.Global.Get("console").Call("log", "user:", user)
	println("println user:", user)
	fmt.Println("fmt.Println user:", user)
}

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4. js调用go

html

<html>
<head>
    <script src="gopherjs.js"></script>
</head>
<body>
    <div id="output"></div>
    <script>
        const cmd = {
            name: '小明',
            age: 10,
        };
        const result = parse(cmd);
        document.getElementById("output").innerHTML = result;
    </script>
</body>
</html>

go

package main

import (
	"encoding/json"

	"github.com/gopherjs/gopherjs/js"
)

type User struct {
	*js.Object
	Name string `js:"name" json:"name"`
	Age  int    `js:"age" json:"age"`
}

func main() {
	js.Global.Set("parse", Parse)
}

func Parse(user User) (ret string) {
	js.Global.Get("console").Call("log", user)
	println("println:", user)
	buf, err := json.Marshal(user)
	if err != nil {
		return
	}
	ret = string(buf)
	println("ret:", ret)
	return
}

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