ivancorrales

// tweaked from: https://stackoverflow.com/a/42718113/1170664
func getXML(url string) ([]byte, error) {
  resp, err := http.Get(url)
  if err != nil {
    return []byte{}, fmt.Errorf("GET error: %v", err)
  }
  defer resp.Body.Close()

  if resp.StatusCode != http.StatusOK {
    return []byte{}, fmt.Errorf("Status error: %v", resp.StatusCode)

ivancorrales

package main

import (
	"bytes"
	"encoding/json"
	"syscall/js"
)

func editionMode(this js.Value, args []js.Value) interface{} {
	if len(args) != 1 {

ivancorrales

<div id="main" class="center">
  <h1>Webassembly tutorial<h1>
  <h2 id="description">JSON Beautifier Online service</h2>
  <div>
    <label for="input">Raw JSON</label>
    <textarea rows="10" cols="100" id="input" name="input"  onfocus="editionMode(this)" onblur="prettify(this)"></textarea>
  </div>
  <div>
    <label for="output">Pretty JSON</label>
    <textarea rows="10" cols="100" id="output" name="output" readonly="true"></textarea>

ivancorrales

package main

import (
	"strings"
	"syscall/js"
)

func main() {
	document := js.Global().Get("document")
	input := document.Call("getElementById", "description").

ivancorrales

<div id="main" class="center">
  <h1>Webassembly tutorial<h1>
  <h2 id="description">Sample 6 | Reading the HTML content from Go</h2>
  <h2 id="descriptionUppercase"></h2>
</div>

ivancorrales

package main

import (
	"syscall/js"
	"time"
)

func main() {
	document := js.Global().Get("document")
	message := document.Call("getElementById", "description")

ivancorrales

package main

import (
	"syscall/js"
	"time"
)

func addGreenClass(classes js.Value) {
	if classes.Call("contains", "pink").Bool() {
		classes.Call("remove", "pink")

ivancorrales

<div id="main" class="center">
  <h1>Webassembly tutorial<h1>
  <h2 id="description">Sample 4 | Modifying the classes of an HTML element</h2>
  <h3 id="simpleText" class="green">Hello my friend!</h3>
</div>

ivancorrales

package main

import (
	"syscall/js"
)

func main() {
	document := js.Global().Get("document")

	h2 := document.Call("createElement", "h2")

ivancorrales

<div id="main" class="center">
  <h1>Webassembly tutorial<h1>
</div>