Ember Octane vs Marko Comparison

<h1>Hello {{this.name}}</h1>

<let/name = "John"/>
<h1>Hello ${name}</h1>

<h1>Hello {{this.name}}</h1>

<let/name = "John"/>
<effect() { name = "Jane" }/>
<h1>Hello ${name}</h1>

<div>{{this.doubleCount}}</div>

<let/count = 10/>
<const/doubleCount = count * 2/>
<div>${doubleCount}</div>

<h1>Hello world</h1>

<h1>Hello world</h1>

/* using: https://github.com/salsify/ember-css-modules */
.title {
  color: red;
}

<h1.title>I am red</h1>
<button style={ fontSize: "10rem" }>I am a button</button>
<button class=scopedButton>I am a style-scoped button</button>

<style>
  .title {
    color: red;
  }
</style>
<style/{ scopedButton }>
  .scopedButton {
    font-size: 10rem;
  }
</style>

<ul>
  {{#each (array "red" "green" "blue") as |color|}}
    <li>{{color}}</li>
  {{/each}}
</ul>

<ul>
  <for|color| of=["red", "green", "blue"]>
    <li>${color}</li>
  </for>
</ul>

<p>Counter: {{this.count}}</p>
<button {{on "click" this.incrementCount}}>+1</button>

<let/count = 0/>
<p>Counter: ${count}</p>
<button onClick() { count++ }>+1</button>

<input {{this.autofocus}} />

<input/inputElement>
<effect() { inputElement().focus() }/>

<button {{on "click" this.nextLight}}>Next light</button>
<p>Light is: {{this.light}}</p>
<p>
  You must
  {{#if (eq this.light "red")}}
    STOP
  {{else if (eq this.light "orange")}}
    SLOW DOWN
  {{else if (eq this.light "green")}}
    GO
  {{/if}}
</p>

static const TRAFFIC_LIGHTS = ["red", "orange", "green"];
<let/lightIndex = 0/>
<const/light = TRAFFIC_LIGHTS[lightIndex]/>

<button onClick() { lightIndex = (lightIndex + 1) % TRAFFIC_LIGHTS.length }>
  Next light
</button>
<p>Light is: ${light}</p>
<p>
  You must
  <if=light === "red">STOP</if>
  <else-if=light === "orange">SLOW DOWN</else-if>
  <else>GO</else>
</p>

<p>Page title is: {{(this.pageTitle)}}</p>

<let/pageTitle = ""/>
<effect() { pageTitle = document.title }/>
<p>Page title: ${pageTitle}</p>

<p>Current time: {{this.time}}</p>

<let/time = new Date()/>
<lifecycle
  onMount() { this.timer = setInterval(_ => time = new Date(), 1000) }
  onDestroy() { clearInterval(this.timer) }
/>
<p>Current time: ${time.toLocaleTimeString()}</p>

<UserProfile
  @name="John"
  @age={{20}}
  @favouriteColors={{array "green" "blue" "red"}}
  @isAvailable={{true}}
/>

<UserProfile
  name="John"
  age=20
  favouriteColors=["green", "blue", "red"]
  isAvailable
/>

<p>Are you happy?</p>
<AnswerButton @onYes={{this.handleYes}} @onNo={{this.handleNo}} />
<p style="font-size: 50px;">{{if this.isHappy "😀" "😥"}}</p>

<let/isHappy = true/>
<p>Are you happy?</p>
<AnswerButton
  onYes() { isHappy = true }
  onNo() { isHappy = false }
/>
<p style={ fontSize: 50 }>${isHappy ? "😀" : "😥"}</p>

<FunnyButton> Click me! </FunnyButton>

<FunnyButton>Click me!</FunnyButton>

<FunnyButton />
<FunnyButton>I got content!</FunnyButton>

<FunnyButton/>
<FunnyButton>I got content!</FunnyButton>

<UserProfile />

<let/user = {
  id: 1,
  username: "unicorn42",
  email: "unicorn42@example.com",
}/>
<const/updateUsername(newUsername) {
  user = { ...user, username: newUsername };
}/>

<h1>Welcome back, ${user.username}</h1>
<set={ ...user, updateUsername }>
  <UserProfile />
</set>

<p>{{this.text}}</p>
<input value={{this.text}} {{on "input" this.handleInput}} />

<let/text = "Hello world"/>
<p>${text}</p>
<input value:=text/>

<input
  id="is-available"
  type="checkbox"
  checked={{this.isAvailable}}
  {{on "change" this.handleChange}}
/>
<label for="is-available">Is available</label>

<input#is-available
  type="checkbox"
  checked:=input.isAvailable
/>
<label for="is-available">Is available</label>

<div>Picked: {{this.picked}}</div>

<input
  id="blue-pill"
  type="radio"
  value="blue"
  checked={{eq this.picked "blue"}}
  {{on "change" this.handleChange}}
/>
<label htmlFor="blue-pill">Blue pill</label>

<input
  id="red-pill"
  type="radio"
  value="red"
  checked={{eq this.picked "red"}}
  {{on "change" this.handleChange}}
/>
<label htmlFor="red-pill">Red pill</label>

<let/picked = "red"/>
<const/handleChange(event) {
  picked = event.target.value;
}/>

<div>Picked: ${picked}</div>
<input#blue-pill
  type="radio"
  checked=picked === "blue"
  value="blue"
  onChange=handleChange
/>
<label for="blue-pill">Blue pill</label>

<input#red-pill
  type="radio"
  checked=picked === "red"
  value="red"
  onChange=handleChange
/>
<label for="red-pill">Red pill</label>

<select {{on "change" this.select}}>
  {{#each this.colors as |color|}}
    <option
      value={{color.id}}
      disabled={{color.isDisabled}}
      selected={{eq color.id this.selectedColorId}}
    >
      {{color.text}}
    </option>
  {{/each}}
</select>

static const colors = [
  { id: 1, text: "red" },
  { id: 2, text: "blue" },
  { id: 3, text: "green" },
  { id: 4, text: "gray", isDisabled: true },
];
<let/selectedColorId = 2/>

<select onChange(event) { selectedColorId = event.target.value }>
  <for|{ id, isDisabled, text }| of=colors>
    <option value=id disabled=isDisabled selected=id === selectedColorId>
      ${text}
    </option>
  </for>
</select>

<!DOCTYPE html>
<html>
  <App/>
</html>

{{#let (this.fetchUsers) as |request|}}
  {{#if request.isLoading}}

    <p>Fetching users...</p>

  {{else if request.error}}

    <p>An error occurred while fetching users</p>

  {{else}}

    <ul>
      {{#each request.users as |user|}}
        <li>
          <img src={{user.picture.thumbnail}} alt="user" />
          <p>{{user.name.first}} {{user.name.last}}</p>
        </li>
      {{/each}}
    </ul>

  {{/if}}
{{/let}}

<await(fetch("https://randomuser.me/api/?results=3").then(res => res.json()))>
  <@placeholder>
    <p>Fetching users...</p>
  </@placeholder>
  <@catch|error|>
    <p>An error occurred while fetching users</p>
  </@catch>
  <@then|{ results: users }|>
    <ul>
      <for|{ picture, name }| of=users>
        <li>
          <img src=picture.thumbnail alt="user">
          <p>${name.first} ${name.last}</p>
        </li>
      </for>
    </ul>
  </@then>
</await>