技术版本：
vue 3.2.40、codemirror 6.0.1、less 4.1.3、vue-codemirror 6.1.1、
@codemirror/lang-vue 0.1.2、@codemirror/theme-one-dark 6.1.2

效果图：

1.安装插件

yarn add codemirror vue-codemirror @codemirror/lang-vue @codemirror/theme-one-dark

2.新建子组件CodeMirror（src/view-components/CodeMirror/index.vue）

<script setup lang="ts">import type { CSSProperties } from 'vue';import { ref } from 'vue';import { Codemirror } from 'vue-codemirror';import { vue } from '@codemirror/lang-vue';import { oneDark } from '@codemirror/theme-one-dark';interface Props {codeStyle?: CSSProperties; // 代码样式dark?: boolean; // 是否暗黑主题code?: string; // 代码字符串// placeholder?: string // 占位文本// autofocus?: boolean // 自动聚焦// disabled?: boolean // 禁用输入行为和更改状态// indentWithTab?: boolean // 启用tab按键// tabSize?: number // tab按键缩进空格数}const props = withDefaults(defineProps<Props>(), {// placeholder: 'Code goes here...',codeStyle: () => {return {};},dark: false,code: '',// autofocus: false,// disabled: false,// indentWithTab: true,// tabSize: 2});const extensions = props.dark ? [vue(), oneDark] : [vue()];const codeValue = ref(props.code);const emits = defineEmits(['update:code','ready','change','focus','blur',]);function handleReady(payload: any) {// console.log('ready')emits('ready', payload);}function onChange(value: string, viewUpdate: any) {emits('change', value, viewUpdate);emits('update:code', value);}function onFocus(viewUpdate: any) {emits('focus', viewUpdate);}function onBlur(viewUpdate: any) {emits('blur', viewUpdate);}
</script><template><div><Codemirrorv-model="codeValue":style="codeStyle":extensions="extensions"v-bind="$attrs"@ready="handleReady"@change="onChange"@focus="onFocus"@blur="onBlur"/></div>
</template><style lang="less" scoped>/deep/ .cm-editor {border-radius: 8px;outline: none;border: 1px solid transparent;.cm-scroller {border-radius: 8px;}}/deep/ .cm-focused {border: 1px solid fade(#000, 48%);}
</style>

3.父组件调用CodeMirror组件

<template><div class="addHttpMqttServicePage"><CodeMirrorv-model:code="form.script"dark:codeStyle="{ width: '1000px', height: '190px', fontSize: '16px' }":disabled="false"@ready="onReady"@change="onChange"@focus="onFocus"@blur="onBlur"/></div></template><script setup lang="ts">import { ref, defineProps } from 'vue';import CodeMirror from '@/view-components/CodeMirror/index.vue';const form = ref({script: '',});const onReady = (payload: any) => {console.log('ready:', payload);};const onChange = (value: string, viewUpdate: any) => {console.log('change:', value);console.log('change:', viewUpdate);};const onFocus = (viewUpdate: any) => {console.log('focus:', viewUpdate);};const onBlur = (viewUpdate: any) => {console.log('blur:', viewUpdate);};</script><style scoped lang="less">.addHttpMqttServicePage {width: 100%;height: 100%;padding: 20px;&-header {font-size: 18px;font-weight: bold;}&-body {padding-top: 24px;width: 50%;display: flex;flex-direction: column;justify-content: flex-start;}}</style>

4.注意点

1.官方文档：https://codemirror.net/
2.disabled为true时，则只允许可读不能修改