响应式

声明状态

Marko 标志 Marko

<let/name="张三">
<h1>你好 ${name}</h1>

Ripple 标志 Ripple

import { track } from "ripple";

export default function Name() {
  let &[name] = track("张三");

  return <h1>"你好 "{name}</h1>;
}

更新状态

Marko 标志 Marko

<let/name="张三">
<script>name = "李四"</script>
<h1>你好 ${name}</h1>

Ripple 标志 Ripple

import { track } from "ripple";

export default function Name() {
  let &[name] = track("张三");
  name = "李四";

  return <h1>"你好 "{name}</h1>;
}

计算属性

Marko 标志 Marko

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

Ripple 标志 Ripple

import { track } from "ripple";

export default function DoubleCount() {
  let &[count] = track(10);
  let &[doubleCount] = track(() => count * 2);

  return <div>{doubleCount}</div>;
}

模板语法

最简模板

Marko 标志 Marko

<h1>你好,世界</h1>

Ripple 标志 Ripple

export default function HelloWorld() {
  return <h1>"你好,世界"</h1>;
}

样式

Marko 标志 Marko

<h1.title>我是红色的</h1>
<button style={ "font-size": "10rem" }>我是一个按钮</button>
<button class=scopedButton>我是一个样式作用域按钮</button>

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

Ripple 标志 Ripple

export default function CssStyle() {
  return <>
    <h1 class="title">"我是红色的"</h1>
    <button style={{ fontSize: "10rem" }}>"我是一个按钮"</button>

    <style>
      .title {
        color: red;
      }
    </style>
  </>;
}

DOM循环

Marko 标志 Marko

<ul>
  <for|color| of=["红", "绿", "蓝"]>
    <li>${color}</li>
  </for>
</ul>

Ripple 标志 Ripple

export default function Colors() {
  const colors = ["红", "绿", "蓝"];

  return <ul>
    for (const color of colors; key color) {
      <li>{color}</li>
    }
  </ul>;
}

点击事件

Marko 标志 Marko

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

Ripple 标志 Ripple

import { track } from "ripple";

export default function Counter() {
  let &[count] = track(0);

  function incrementCount() {
    count++;
  }

  return <>
    <p>"计数器: "{count}</p>
    <button onClick={incrementCount}>"+1"</button>
  </>;
}

DOM引用

Marko 标志 Marko

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

Ripple 标志 Ripple

export default function InputFocused() {
  function autofocus(element) {
    element.focus();
  }

  return <input ref={autofocus} />;
}

条件渲染

Marko 标志 Marko

static const TRAFFIC_LIGHTS = ["红灯", "黄灯", "绿灯"];
<let/lightIndex=0>
<const/light=TRAFFIC_LIGHTS[lightIndex]>

<button onClick() { lightIndex = (lightIndex + 1) % TRAFFIC_LIGHTS.length }>
  下一个灯
</button>
<p>现在亮着的是: ${light}</p>
<p>
  你应该
  <if=light === "红灯">停下</if>
  <else if=light === "黄灯">慢行</else>
  <else>赶紧走</else>
</p>

Ripple 标志 Ripple

import { track } from "ripple";

const TRAFFIC_LIGHTS = ["红灯", "黄灯", "绿灯"];

export default function TrafficLight() {
  let &[lightIndex] = track(0);

  let &[light] = track(() => TRAFFIC_LIGHTS[lightIndex]);

  function nextLight() {
    lightIndex = (lightIndex + 1) % TRAFFIC_LIGHTS.length;
  }

  return <>
    <button onClick={nextLight}>"下一个灯"</button>
    <p>"现在亮着的是: "{light}</p>
    <p>
      "你应该 "
      if (light === "红灯") {
        <span>"停下"</span>
      } else if (light === "黄灯") {
        <span>"慢行"</span>
      } else if (light === "绿灯") {
        <span>"赶紧走"</span>
      }
    </p>
  </>;
}

生命周期

组件加载时

Marko 标志 Marko

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

Ripple 标志 Ripple

import { effect, track } from "ripple";

export default function PageTitle() {
  let &[pageTitle] = track("");

  effect(() => {
    pageTitle = document.title;
  });

  return <h1>"页面标题: "{pageTitle}</h1>;
}

组件卸载时

Marko 标志 Marko

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

Ripple 标志 Ripple

import { effect, track } from "ripple";

export default function Time() {
  let &[time] = track(new Date().toLocaleTimeString());

  effect(() => {
    const timer = setInterval(() => {
      time = new Date().toLocaleTimeString();
    }, 1000);

    return () => clearInterval(timer);
  });

  return <h1>"当前时间: "{time}</h1>;
}

组件组合

组件Props传参

Marko 标志 Marko

<UserProfile
  name="张三"
  age=20
  favouriteColors=["green", "blue", "red"]
  isAvailable
/>

Ripple 标志 Ripple

import { UserProfile } from "./UserProfile.tsrx";

export function App() {
  return <UserProfile
    name="张三"
    age={20}
    favouriteColors={["绿", "蓝", "红"]}
    isAvailable
  />;
}

向父组件emit事件

Marko 标志 Marko

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

Ripple 标志 Ripple

import { track } from "ripple";

import { AnswerButton } from "./AnswerButton.tsrx";

export function App() {
  let &[isHappy] = track(true);

  function onAnswerNo() {
    isHappy = false;
  }

  function onAnswerYes() {
    isHappy = true;
  }

  return <>
    <p>"你快乐吗?"</p>
    <AnswerButton onYes={onAnswerYes} onNo={onAnswerNo} />
    <p style={{ fontSize: "50px" }}>{isHappy ? "😀" : "😥"}</p>
  </>;
}

slot插槽

Marko 标志 Marko

<FunnyButton>点我!</FunnyButton>

Ripple 标志 Ripple

import { FunnyButton } from "./FunnyButton.tsrx";

export function App() {
  return <FunnyButton>"点我!"</FunnyButton>;
}

slot插槽内容

Marko 标志 Marko

<FunnyButton/>
<FunnyButton>这是传到slot的内容!</FunnyButton>

Ripple 标志 Ripple

import { FunnyButton } from "./FunnyButton.tsrx";

export function App() {
  return <>
    <FunnyButton />
    <FunnyButton>"这是传到slot的内容!"</FunnyButton>
  </>;
}

上下文

Marko 标志 Marko

<let/user={
  id: 1,
  username: "abcdefg",
  email: "[email protected]",
}>
<const/updateUsername(newUsername) {
  user = { ...user, username: newUsername };
}>

<h1>欢迎回来, ${user.username}</h1>
<context={ ...user, updateUsername }>
  <UserProfile />
</context>

Ripple 标志 Ripple

import { RippleObject } from "ripple";

import { UserContext } from "./UserContext.tsrx";
import { UserProfile } from "./UserProfile.tsrx";

export function App() {
  const user = new RippleObject({
    id: 1,
    username: "abcdefg",
    email: "[email protected]",
  });

  UserContext.set(user);

  return <>
    <h1>"欢迎回来, "{user.username}</h1>
    <UserProfile />
  </>;
}

表单输入

输入框

Marko 标志 Marko

<let/text="你好世界">
<p>${text}</p>
<input value:=text>

Ripple 标志 Ripple

import { bindValue, track } from "ripple";

export default function InputHello() {
  let &[text, textTracked] = track("你好,世界");

  return <>
    <p>{text}</p>
    <input ref={bindValue(textTracked)} />
  </>;
}

复选框

Marko 标志 Marko

<input#is-available
  type="checkbox"
  checked:=input.isAvailable
>
<label for="is-available">这是一个checkbox</label>

Ripple 标志 Ripple

import { bindChecked, track } from "ripple";

export default function IsAvailable() {
  let &[isAvailable, isAvailableTracked] = track(false);

  return <>
    <input
      id="is-available"
      type="checkbox"
      ref={bindChecked(isAvailableTracked)}
    />
    <label for="is-available">"这是一个checkbox"</label>
  </>;
}

单选框

Marko 标志 Marko

<let/picked="red">

<div>你选择了: ${picked}</div>
<input#blue-pill
  type="radio"
  value="blue"
  checkedValue:=picked
>
<label for="blue-pill">蓝色</label>

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

Ripple 标志 Ripple

import { bindGroup, track } from "ripple";

export default function PickPill() {
  let &[picked, pickedTracked] = track("red");

  return <>
    <div>"你选择了: "{picked}</div>

    <input
      id="blue-pill"
      type="radio"
      value="blue"
      ref={bindGroup(pickedTracked)}
    />
    <label for="blue-pill">"蓝色"</label>

    <input
      id="red-pill"
      type="radio"
      value="red"
      ref={bindGroup(pickedTracked)}
    />
    <label for="red-pill">"红色"</label>
  </>;
}

选择器

Marko 标志 Marko

static const colors = [
  { id: 1, text: "红" },
  { id: 2, text: "蓝" },
  { id: 3, text: "绿" },
  { id: 4, text: "灰", isDisabled: true },
];
<let/selectedColorId=2>

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

Ripple 标志 Ripple

import { bindValue, track } from "ripple";

const colors = [
  { id: 1, text: "红" },
  { id: 2, text: "蓝" },
  { id: 3, text: "绿" },
  { id: 4, text: "灰", isDisabled: true },
];

export default function ColorSelect() {
  let &[selectedColorId, selectedColorIdTracked] = track(2);

  return <select ref={bindValue(selectedColorIdTracked)}>
    for (const color of colors; key color.id) {
      <option value={color.id} disabled={color.isDisabled}>
        {color.text}
      </option>
    }
  </select>;
}

Web应用特性

渲染应用

Marko 标志 Marko

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

Ripple 标志 Ripple

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

fetch获取数据

Marko 标志 Marko

<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>正在获取用户信息……</p>
  </@placeholder>
  <@catch|error|>
    <p>获取用户信息出错</p>
  </@catch>
</try>

Ripple 标志 Ripple

import { useFetchUsers } from "./useFetchUsers.tsrx";

export function App() {
  const data = useFetchUsers();

  return <>
    if (data.isLoading) {
      <p>"正在获取用户信息……"</p>
    } else if (data.error) {
      <p>"获取用户信息出错"</p>
    } else if (data.users) {
      <ul>
        for (const user of data.users; key user.login.uuid) {
          <li>
            <img src={user.picture.thumbnail} alt="用户" />
            <p>{user.name.first}" "{user.name.last}</p>
          </li>
        }
      </ul>
    }
  </>;
}