Component Party 标志

Component Party 中文版

响应式

声明状态

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      name: "张三",
    };
  },
};
</script>

<template>
  <h1>你好 {{ name }}</h1>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      name: "张三",
    };
  },
  created() {
    this.name = "李四";
  },
};
</script>

<template>
  <h1>你好 {{ name }}</h1>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      count: 10,
    };
  },
  computed: {
    doubleCount() {
      return this.count * 2;
    },
  },
};
</script>

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

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

Vue 2 标志 Vue 2

<template>
  <h1>你好，世界</h1>
</template>

Ripple 标志 Ripple

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

样式

Vue 2 标志 Vue 2

<template>
  <div>
    <h1 class="title">我是红色的</h1>
    <button style="font-size: 10rem">我是一个按钮</button>
  </div>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      colors: ["红", "绿", "蓝"],
    };
  },
};
</script>

<template>
  <ul>
    <li v-for="color in colors" :key="color">
      {{ color }}
    </li>
  </ul>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      count: 0,
    };
  },
  methods: {
    incrementCount() {
      this.count++;
    },
  },
};
</script>

<template>
  <div>
    <p>计数器: {{ count }}</p>
    <button @click="incrementCount">+1</button>
  </div>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  mounted() {
    this.$refs.inputElement.focus();
  },
};
</script>

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

Ripple 标志 Ripple

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

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

条件渲染

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      TRAFFIC_LIGHTS: ["红灯", "黄灯", "绿灯"],
      lightIndex: 0,
    };
  },
  computed: {
    light() {
      return this.TRAFFIC_LIGHTS[this.lightIndex];
    },
  },
  methods: {
    nextLight() {
      this.lightIndex = (this.lightIndex + 1) % this.TRAFFIC_LIGHTS.length;
    },
  },
};
</script>

<template>
  <div>
    <button @click="nextLight">下一个灯</button>
    <p>现在亮着的是: {{ light }}</p>
    <p>
      你应该
      <span v-if="light === '红灯'">停下</span>
      <span v-else-if="light === '黄灯'">慢行</span>
      <span v-else-if="light === '绿灯'">赶紧走</span>
    </p>
  </div>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      pageTitle: "",
    };
  },
  mounted() {
    this.pageTitle = document.title;
  },
};
</script>

<template>
  <p>页面标题: {{ pageTitle }}</p>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      time: new Date().toLocaleTimeString(),
      timer: null,
    };
  },
  mounted() {
    this.timer = setInterval(() => {
      this.time = new Date().toLocaleTimeString();
    }, 1000);
  },
  beforeDestroy() {
    clearInterval(this.timer);
  },
};
</script>

<template>
  <p>当前时间: {{ time }}</p>
</template>

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

Vue 2 标志 Vue 2

<script>
import UserProfile from "./UserProfile.vue";

export default {
  components: {
    UserProfile,
  },
};
</script>

<template>
  <UserProfile
    name="张三"
    :age="20"
    :favorite-colors="['green', 'blue', 'red']"
    is-available
  />
</template>

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

Vue 2 标志 Vue 2

<script>
import AnswerButton from "./AnswerButton.vue";
export default {
  components: {
    AnswerButton,
  },
  data() {
    return {
      isHappy: true,
    };
  },
  methods: {
    onAnswerNo() {
      this.isHappy = false;
    },
    onAnswerYes() {
      this.isHappy = true;
    },
  },
};
</script>

<template>
  <div>
    <p>你快乐吗?</p>
    <AnswerButton @yes="onAnswerYes" @no="onAnswerNo" />
    <p style="font-size: 50px">
      {{ isHappy ? "😀" : "😥" }}
    </p>
  </div>
</template>

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

Vue 2 标志 Vue 2

<script>
import FunnyButton from "./FunnyButton.vue";
export default {
  components: {
    FunnyButton,
  },
};
</script>

<template>
  <FunnyButton> 点我! </FunnyButton>
</template>

Ripple 标志 Ripple

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

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

slot插槽内容

Vue 2 标志 Vue 2

<script>
import FunnyButton from "./FunnyButton.vue";
export default {
  components: {
    FunnyButton,
  },
};
</script>

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

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

Vue 2 标志 Vue 2

<script>
import UserProfile from "./UserProfile.vue";

export default {
  components: { UserProfile },
  provide() {
    return {
      user: Object.assign(this.user, {
        updateUsername: this.updateUsername,
      }),
    };
  },
  data() {
    return {
      user: {
        id: 1,
        username: "abcdefg",
        email: "[email protected]",
      },
    };
  },
  methods: {
    updateUsername(newUsername) {
      this.user.username = newUsername;
    },
  },
};
</script>

<template>
  <div>
    <h1>欢迎回来, {{ user.username }}</h1>
    <UserProfile />
  </div>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      text: "你好世界",
    };
  },
};
</script>

<template>
  <div>
    <p>{{ text }}</p>
    <input v-model="text" />
  </div>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      isAvailable: true,
    };
  },
};
</script>

<template>
  <div>
    <input id="is-available" v-model="isAvailable" type="checkbox" />
    <label for="is-available">这是一个checkbox</label>
  </div>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      picked: "red",
    };
  },
};
</script>

<template>
  <div>
    <div>你选择了: {{ picked }}</div>

    <input id="blue-pill" v-model="picked" type="radio" value="blue" />
    <label for="blue-pill">蓝色</label>

    <input id="red-pill" v-model="picked" type="radio" value="red" />
    <label for="red-pill">红色</label>
  </div>
</template>

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      selectedColorId: 2,
      colors: [
        { id: 1, text: "红" },
        { id: 2, text: "蓝" },
        { id: 3, text: "绿" },
        { id: 4, text: "灰", isDisabled: true },
      ],
    };
  },
};
</script>

<template>
  <select v-model="selectedColorId">
    <option
      v-for="color in colors"
      :key="color.id"
      :value="color.id"
      :disabled="color.isDisabled"
    >
      {{ color.text }}
    </option>
  </select>
</template>

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

Vue 2 标志 Vue 2

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

Vue 2 标志 Vue 2

<script>
export default {
  data() {
    return {
      isLoading: false,
      error: undefined,
      users: undefined,
    };
  },
  mounted() {
    this.fetchData();
  },
  methods: {
    async fetchData() {
      this.isLoading = true;
      try {
        const response = await fetch("https://randomuser.me/api/?results=3");
        const { results: users } = await response.json();
        this.users = users;
        this.error = undefined;
      } catch (error) {
        this.error = error;
      } finally {
        this.users = undefined;
        this.isLoading = false;
      }
    },
  },
};
</script>

<template>
  <p v-if="isLoading">正在获取用户信息……</p>
  <p v-else-if="error">获取用户信息出错</p>
  <ul v-else-if="users">
    <li v-for="user in users" :key="user.login.uuid">
      <img :src="user.picture.thumbnail" alt="user" />
      <p>
        {{ user.name.first }}
        {{ user.name.last }}
      </p>
    </li>
  </ul>
</template>

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>
    }
  </>;
}