为了方便进行文本编辑，计划封装整合一个 MarkDown 编辑器方便调用。 选用ByteMD框架。

安装

npm install @bytemd/vue-next

引入

// main.ts
import "bytemd/dist/index.css";

// @/components/MdEditor.vue
<template>
    <Editor :value="value" :plugins="plugins" @change="handleChange" />
</template>

<script lang="ts" setup>
import gfm from "@bytemd/plugin-gfm";
import highlight from "@bytemd/plugin-highlight";
import math from "@bytemd/plugin-math";

const plugins = [
    gfm(),
    highlight(),
    math(),
    // Add more plugins here
];

const handleChange = (v: string) => {
    value.value = v;
};
</script>

组件间传参

遇到了问题：父组件无法拿到子组件中的值。

解决方法：通过在父组件中定义取值方法，将更新值的方法传入子组件，并在子组件中绑定事件以达成实时更新当前的值。

父组件

<template>
    <MdEditor :handle-change="onContentChange" :value="question.content" />
</template>
<script lang="ts" setup>
const onContentChange = (v: string) => {
    question.value.content = v;
};
</script>

子组件

<template>
    <Editor
        :mode="mode"
        :plugins="plugins"
        :value="value"
        @change="handleChange"
    />
</template>
<script lang="ts" setup>
import gfm from "@bytemd/plugin-gfm";
import highlight from "@bytemd/plugin-highlight";
import math from "@bytemd/plugin-math";
import { defineProps, withDefaults } from "vue";

/**
   定义组件属性类型
   */
interface Props {
    value: string;
    mode?: string;
    handleChange: (v: string) => void;
}

/**
   给组件指定初始值
   */
const props = withDefaults(defineProps<Props>(), {
    value: () => "",
    mode: () => "split",
    handleChange: (v: string) => {
        console.log(v);
    },
});

const plugins = [
    gfm(),
    highlight(),
    math(),
    // Add more plugins here
];
</script>

还有一种组件间传参的方法：v-model：

父组件

<template>
    <MdEditor v-model:value="question.content" />
</template>

子组件

<template>
    <Editor
        :mode="mode"
        :plugins="plugins"
        :value="value"
        @change="handleChange"
    />
</template>
<script lang="ts" setup>
import gfm from "@bytemd/plugin-gfm";
import highlight from "@bytemd/plugin-highlight";
import math from "@bytemd/plugin-math";
import { defineEmits, defineProps, withDefaults } from "vue";

/**
   定义组件属性类型
   */
interface Props {
    value: string;
    mode?: string;
    handleChange: (v: string) => void;
}

/**
   给组件指定初始值
   */
const props = withDefaults(defineProps<Props>(), {
    value: () => "",
    mode: () => "split",
});

const plugins = [gfm(), highlight(), math()];

const emit = defineEmits(["update:value"]);
const handleChange = (v: string) => {
    emit("update:value", v);
};
</script>