Marko vs Aurelia 1

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

<template>
  <h1>Hello ${name}</h1>
</template>

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

<template>
  <h1>Hello ${name}</h1>
</template>

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

<template>
  <div>${doubleCount}</div>
</template>

<h1>Hello world</h1>

<template>
  <h1>Hello world</h1>
</template>

<h1.title>I am red</h1>
<button style={ "font-size": "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>

.title {
  color: red;
}

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

<template>
  <ul>
    <li repeat.for="color of colors">${color}</li>
  </ul>
</template>

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

<template>
  <p>Counter: ${count}</p>
  <button click.trigger="incrementCount()">+1</button>
</template>

<input/inputElement>
<script>
  inputElement().focus();
</script>

<template>
  <input ref="inputElement" />
</template>

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>
  <else>GO</else>
</p>

<template>
  <button click.trigger="nextLight()">Next light</button>
  <p>Light is: ${light}</p>
  <p>
    You must
    <span if.bind="light === 'red'">STOP</span>
    <span if.bind="light === 'orange'">SLOW DOWN</span>
    <span if.bind="light === 'green'">GO</span>
  </p>
</template>

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

<template>
  <p>Page title is: ${pageTitle}</p>
</template>

<let/time=new Date()>
<script>
  const id = setInterval(() => time = new Date(), 1000);
  $signal.onabort = () => clearInterval(id)
</script>
<p>Current time: ${time.toLocaleTimeString()}</p>

<template>
  <p>Current time: ${time}</p>
</template>

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

<template>
  <require from="./user-profile"></require>
  <user-profile
    name.bind="name"
    age.bind="age"
    favourite-colors.bind="colors"
    is-available.bind="available"
  ></user-profile>
</template>

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

<template>
  <require from="./answer-button"></require>
  <p>Can I come ?</p>
  <answer-button action-handler.call="handleAnswer(reply)"></answer-button>
  <p style="font-size: 50px">${isHappy ? "😀" : "😥"}</p>
</template>

<FunnyButton>Click me!</FunnyButton>

<template>
  <require from="./funny-button"></require>

  <funny-button>Click me !</funny-button>
</template>

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

<template>
  <require from="./funny-button"></require>

  <funny-button></funny-button>
  <funny-button>Click me !</funny-button>
</template>

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

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

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

<template>
  <p>${text}</p>
  <input value.bind="text" />
</template>

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

<template>
  <input id="is-available" type="checkbox" checked.bind="isAvailable" />
  <label for="is-available">Is available</label>: ${isAvailable}
</template>

<let/picked="red">

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

<input#red-pill
  type="radio"
  value="red"
  checkedValue:=picked
>
<label for="red-pill">Red pill</label>

<template>
  <div>Picked: ${picked}</div>

  <input id="blue-pill" checked.bind="picked" type="radio" value="blue" />
  <label for="blue-pill">Blue pill</label>

  <input id="red-pill" checked.bind="picked" type="radio" value="red" />
  <label for="red-pill">Red pill</label>
</template>

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 value:=selectedColorId>
  <for|{ id, isDisabled, text }| of=colors>
    <option value=id disabled=isDisabled>
      ${text}
    </option>
  </for>
</select>

<template>
  <select value.bind="selectedColorId">
    <option value="">Select A Color</option>
    <option
      repeat.for="color of colors"
      value.bind="color.id"
      disabled.bind="color.isDisabled"
    >
      ${color.text}
    </option>
  </select>
</template>

<!doctype html>
<html>
  <body>
    <div id="app"></div>
    <script type="module" src="./app.js"></script>
  </body>
</html>

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

<template>
  <p if.bind="isLoading">Fetching users...</p>
  <p if.bind="error">An error ocurred while fetching users</p>
  <ul if.bind="users">
    <li repeat.for="user of users">
      <img src.bind="user.picture.thumbnail" alt="user" />
      <p>${ user.name.first } ${ user.name.last }</p>
    </li>
  </ul>
</template>