Component Party 标志

Component Party 中文版

响应式

声明状态

Mithril 标志 Mithril

import m from "mithril";

export default function Name() {
  let name = "张三";

  return {
    view: () => m("h1", `你好 ${name}`),
  };
}

Qwik 标志 Qwik

import { component$, useSignal } from "@builder.io/qwik";

export const Name = component$(() => {
  const name = useSignal("张三");

  return <h1>你好 {name.value}</h1>;
});

更新状态

Mithril 标志 Mithril

import m from "mithril";

export default function Name() {
  let name = "张三";
  name = "李四";
  return {
    view: () => m("h1", `你好 ${name}`),
  };
}

Qwik 标志 Qwik

import { component$, useTask$, useSignal } from "@builder.io/qwik";

export const Name = component$(() => {
  const name = useSignal("张三");

  useTask$(() => {
    name.value = "李四";
  });

  return <h1>你好 {name.value}</h1>;
});

计算属性

Mithril 标志 Mithril

import m from "mithril";

export default function DoubleCount() {
  let count = 10;
  let doubleCount = count * 2;
  return {
    view: () => m("div", doubleCount),
  };
}

Qwik 标志 Qwik

import { component$, useSignal, useComputed$ } from "@builder.io/qwik";

export const DoubleCount = component$(() => {
  const count = useSignal(10);
  const doubleCount = useComputed$(() => count.value * 2);

  return <div>{doubleCount.value}</div>;
});

模板语法

最简模板

Mithril 标志 Mithril

import m from "mithril";

export default function HelloWorld() {
  return {
    view: () => m("h1", "你好，世界"),
  };
}

Qwik 标志 Qwik

export const HelloWorld = () => {
  return <div>你好，世界</div>;
};

样式

Mithril 标志 Mithril

import "./style.css";
import m from "mithril";

export default function CssStyle() {
  return {
    view: () =>
      m(
        "div",
        m("h1.title", "我是红色的"),
        m("button", { style: { fontSize: "10rem" } }, "我是一个按钮"),
      ),
  };
}

Qwik 标志 Qwik

import { component$, useStyles$ } from "@builder.io/qwik";

export const App = component$(() => {
  useStyles$(`
    .title {
      color: red;
    }
    `);

  return (
    <>
      <h1 class="title">我是红色的</h1>
      <button style={{ "font-size": "10rem" }}>我是一个按钮</button>
    </>
  );
});

DOM循环

Mithril 标志 Mithril

import m from "mithril";

export default function Colors() {
  const colors = ["红", "绿", "蓝"];
  return {
    view: () =>
      m(
        "ul",
        colors.map((color, idx) => m("li", { key: idx }, color)),
      ),
  };
}

Qwik 标志 Qwik

import { component$ } from "@builder.io/qwik";

export const Colors = component$(() => {
  const colors = ["红", "绿", "蓝"];
  return (
    <ul>
      {colors.map((color) => (
        <li key={color}>{color}</li>
      ))}
    </ul>
  );
});

点击事件

Mithril 标志 Mithril

import m from "mithril";

export default function Counter() {
  let count = 0;
  const incrementCount = () => (count = count + 1);
  return {
    view: () =>
      m(
        "div",
        m("p", `计数器: ${count}`),
        m("button", { onclick: incrementCount }, "+1"),
      ),
  };
}

Qwik 标志 Qwik

import { component$, useSignal, $ } from "@builder.io/qwik";

export const Counter = component$(() => {
  const count = useSignal(0);

  const incrementCount = $(() => {
    count.value++;
  });

  return (
    <>
      <p>计数器: {count.value}</p>
      <button onClick$={incrementCount}>Increment</button>
    </>
  );
});

DOM引用

Mithril 标志 Mithril

import m from "mithril";

export default function InputFocused() {
  let value = "";
  return {
    view: () =>
      m("input", {
        oncreate: ({ dom }) => dom.focus(),
        type: "text",
        value,
        oninput: (e) => (value = e.target.value),
      }),
  };
}

Qwik 标志 Qwik

import { component$, useVisibleTask$, useSignal } from "@builder.io/qwik";

export const InputFocused = component$(() => {
  const inputElement = useSignal<HTMLInputElement>();

  useVisibleTask$(({ track }) => {
    const el = track(inputElement);
    el?.focus();
  });

  return <input type="text" ref={inputElement} />;
});

条件渲染

Mithril 标志 Mithril

import m from "mithril";
const TRAFFIC_LIGHTS = ["红灯", "黄灯", "绿灯"];

export default function TrafficLight() {
  let lightIndex = 0;
  let currentLight = () => TRAFFIC_LIGHTS[lightIndex];

  const nextLight = () => (lightIndex + 1) % TRAFFIC_LIGHTS.length;

  const instructions = () => {
    switch (currentLight()) {
      case "红灯":
        return "停下";
      case "黄灯":
        return "慢行";
      case "绿灯":
        return "赶紧走";
    }
  };

  return {
    view: () =>
      m(
        "div",
        m("button", { onclick: nextLight }, "下一个灯"),
        m("p", `现在亮着的是: ${currentLight()}`),
        m("p", "你应该 ", m("span", instructions())),
      ),
  };
}

Qwik 标志 Qwik

import { $, component$, useComputed$, useSignal } from "@builder.io/qwik";

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

export const TrafficLight = component$(() => {
  const lightIndex = useSignal(0);

  const light = useComputed$(() => TRAFFIC_LIGHTS[lightIndex.value]);

  const nextLight = $(() => {
    lightIndex.value = (lightIndex.value + 1) % TRAFFIC_LIGHTS.length;
  });

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

生命周期

组件加载时

Mithril 标志 Mithril

import m from "mithril";

export default function PageTitle() {
  return {
    view: () => m("p", `页面标题: ${document.title}`),
  };
}

Qwik 标志 Qwik

import { component$, useVisibleTask$, useStore } from "@builder.io/qwik";

export const App = component$(() => {
  const store = useStore({
    pageTitle: "",
  });

  useVisibleTask$(() => {
    store.pageTitle = document.title;
  });

  return <p>页面标题: {store.pageTitle}</p>;
});

组件卸载时

Mithril 标志 Mithril

import m from "mithril";

export default function Time() {
  let time = new Date().toLocaleTimeString();

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

  return {
    view: () => m("p", `当前时间: ${time}`),
    onremove: () => clearInterval(timer),
  };
}

Qwik 标志 Qwik

import { component$, useVisibleTask$, useStore } from "@builder.io/qwik";

export const App = component$(() => {
  const store = useStore({
    time: new Date().toLocaleTimeString(),
  });

  useVisibleTask$(({ cleanup }) => {
    const timer = setInterval(() => {
      store.time = new Date().toLocaleTimeString();
    }, 1000);

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

  return <p>当前时间: {store.time}</p>;
});

组件组合

组件Props传参

Mithril 标志 Mithril

import m from "mithril";
import UserProfile from "./UserProfile.js";

export default function App() {
  return {
    view: () =>
      m(UserProfile, {
        name: "张三",
        age: 20,
        favouriteColors: ["green", "blue", "red"],
        isAvailable: true,
      }),
  };
}

Qwik 标志 Qwik

import { component$ } from "@builder.io/qwik";
import UserProfile from "./UserProfile";

const App = component$(() => {
  return (
    <UserProfile
      name="张三"
      age={20}
      favouriteColors={["green", "blue", "red"]}
      isAvailable
    />
  );
});

export default App;

向父组件emit事件

Mithril 标志 Mithril

import m from "mithril";
export const AnswerButton = ({ attrs: { onYes, onNo } }) => ({
  view: () =>
    m(
      "div",
      m("button", { onclick: onYes }, "是的！"),
      m("button", { onclick: onNo }, "不是！"),
    ),
});

Qwik 标志 Qwik

import { $, component$, useStore } from "@builder.io/qwik";
import AnswerButton from "./AnswerButton";

const App = component$(() => {
  const store = useStore({
    isHappy: true,
  });

  const onAnswerNo = $(() => {
    store.isHappy = false;
  });

  const onAnswerYes = $(() => {
    store.isHappy = true;
  });

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

export default App;

slot插槽

Mithril 标志 Mithril

import m from "mithril";
import { FunnyButton } from "./FunnyButton.jsx";

export default function App() {
  return {
    view: () => m(FunnyButton, "点我!"),
  };
}

Qwik 标志 Qwik

import FunnyButton from "./FunnyButton";

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

slot插槽内容

Mithril 标志 Mithril

import m from "mithril";
import FunnyButton from "./FunnyButton.jsx";

export default function App() {
  return {
    view: () => m("", m(FunnyButton), m(FunnyButton, "这是传到slot的内容!")),
  };
}

Qwik 标志 Qwik

import FunnyButton from "./FunnyButton";

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

上下文

Mithril 标志 Mithril

import m from "mithril";
import UserProfile from "./UserProfile";

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

  const updateUsername = (username) => (user.username = username);

  return {
    view: () =>
      m(
        "",
        m("h1", `欢迎回来, ${user.username}`),
        m(UserProfile, { user, updateUsername }),
      ),
  };
}

Qwik 标志 Qwik

import {
  component$,
  useStore,
  useContextProvider,
  createContext,
  $,
} from "@builder.io/qwik";
import UserProfile from "./UserProfile";

export const UserContext = createContext("user-context");

const App = component$(() => {
  const user = useStore({
    id: 1,
    username: "abcdefg",
    email: "[email protected]",
  });

  const updateUsername = $((newUsername) => {
    user.username = newUsername;
  });

  useContextProvider(UserContext, { user, updateUsername });

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

export default App;

表单输入

输入框

Mithril 标志 Mithril

import m from "mithril";

export default function InputHello() {
  let text = "你好世界";
  const handleChange = ({ target: { value } }) => (text = value);

  return {
    view: () =>
      m("", m("p", text), m("input", { value: text, onchange: handleChange })),
  };
}

Qwik 标志 Qwik

import { component$, useSignal } from "@builder.io/qwik";

const InputHello = component$(() => {
  const text = useSignal("");

  return (
    <>
      <p>{text.value}</p>
      <input bind:value={text} />
    </>
  );
});

export default InputHello;

复选框

Mithril 标志 Mithril

import m from "mithril";

export default function IsAvailable() {
  let isAvailable = false;
  const onUpdate = () => (isAvailable = !isAvailable);

  return {
    view: () =>
      m(
        "",

        m("input", {
          id: "is-available",
          type: "checkbox",
          checked: isAvailable,
          onchange: onUpdate,
        }),
        m("label", { for: "is-available" }, "这是一个checkbox"),
      ),
  };
}

Qwik 标志 Qwik

import { component$, useSignal } from "@builder.io/qwik";

const IsAvailable = component$(() => {
  const isAvailable = useSignal(false);

  return (
    <>
      <input id="is-available" type="checkbox" bind:checked={isAvailable} />
      <label for="is-available">这是一个checkbox</label>
    </>
  );
});

export default IsAvailable;

单选框

Mithril 标志 Mithril

import m from "mithril";

export default function PickPill() {
  let picked = "red";
  let pills = ["red", "green", "blue"];
  const handleChange = ({ target: { value } }) => (picked = value);

  return {
    view: () =>
      m(
        "",
        m("", `你选择了: ${picked}`),
        pills.map((pill) =>
          m(
            ".",
            m("input", {
              id: pill,
              checked: picked == pill,
              type: "radio",
              value: pill,
              onchange: handleChange,
            }),
            m("label", { for: pill }, pill),
          ),
        ),
      ),
  };
}

Qwik 标志 Qwik

import { component$, useSignal } from "@builder.io/qwik";

const PickPill = component$(() => {
  const pickedColor = useSignal("red");

  return (
    <>
      <div>你选择了: {pickedColor.value}</div>
      <input
        id="blue-pill"
        type="radio"
        bind:value={pickedColor}
        checked={pickedColor.value === "blue"}
        value="blue"
      />
      <label for="blue-pill">蓝色</label>

      <input
        id="red-pill"
        type="radio"
        checked={pickedColor.value === "red"}
        bind:value={pickedColor}
        value="red"
      />
      <label for="red-pill">红色</label>
    </>
  );
});

export default PickPill;

选择器

Mithril 标志 Mithril

import m from "mithril";
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 = 2;

  const handleSelect = ({ target: { value } }) => (selectedColorId = value);

  return {
    view: () =>
      m(
        "select",
        { value: selectedColorId, onchange: handleSelect },
        colors.map(({ id, text, isDisabled }) =>
          m("option", { key: id, id, disabled: isDisabled, value: id }, text),
        ),
      ),
  };
}

Qwik 标志 Qwik

import { component$, useSignal } from "@builder.io/qwik";

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

const ColorSelect = component$(() => {
  const selectedColorId = useSignal("2");

  return (
    <select bind:value={selectedColorId}>
      {colors.map((color) => (
        <option
          key={color.id}
          value={color.id}
          disabled={color.isDisabled}
          selected={`${color.id}` === selectedColorId.value}
        >
          {color.text}
        </option>
      ))}
    </select>
  );
});

export default ColorSelect;

Web应用特性

渲染应用

Mithril 标志 Mithril

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

Qwik 标志 Qwik

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

fetch获取数据

Mithril 标志 Mithril

import m from "mithril";

export default function App() {
  let isLoading = false;
  let error = null;
  let users = [];

  async function fetchUsers() {
    isLoading = true;
    try {
      const { results } = await m.request(
        "https://randomuser.me/api/?results=3",
      );
      users = results;
    } catch (err) {
      error = err;
    }
    isLoading = false;
  }

  return {
    oninit: fetchUsers,
    view() {
      if (isLoading) return m("p", "正在获取用户信息……");
      if (error) return m("p", "获取用户信息出错");
      return users.map((user) =>
        m(
          "li",
          { key: user.login.uuid },
          m("img", { src: user.picture.thumbnail, alt: "user" }),
          m("p", `${user.name.first} ${user.name.last}`),
        ),
      );
    },
  };
}

Qwik 标志 Qwik

import { component$, useResource$, Resource } from "@builder.io/qwik";

type UsersResponse = {
  results: {
    picture: {
      thumbnail: string;
    };
    name: {
      first: string;
      last: string;
    };
  }[];
};

export async function fetchUsers() {
  return (await fetch("https://randomuser.me/api/?results=3")).json();
}

export const App = component$(() => {
  const data = useResource$<UsersResponse>(fetchUsers);

  return (
    <Resource
      value={data}
      onPending={() => <p>正在获取用户信息……</p>}
      onRejected={() => <p>获取用户信息出错</p>}
      onResolved={({ results: users }) => (
        <ul>
          {users.map((user) => (
            <li>
              <img src={user.picture.thumbnail} alt="user" />
              <p>
                {user.name.first} {user.name.last}
              </p>
            </li>
          ))}
        </ul>
      )}
    />
  );
});