前端 json格式化显示 json编辑器使用vue3-ace-editor

1.安装
项目目录下打开终端 运行

npm install vue3-ace-editor

2.使用

<template>
    <div class='content'>
        <el-select v-model="aceConfig.theme" class="m-2" placeholder="Select" size="large">
            <el-option v-for="item in aceConfig.arr" :key="item" :label="item" :value="item" />
        </el-select>
        <el-button @click="jsonFormat">格式化</el-button>
        <el-button @click="jsonNoFormat">压缩</el-button>
        <v-ace-editor v-model:value="dataForm.textareashow" @init="jsonFormat" lang="json" :theme="aceConfig.theme"
                      :options="aceConfig.options" :readonly="aceConfig.readOnly" style="height:300px;margin-top: 20px;" class="ace-editor" />
    </div>
</template>

<script setup>
import { reactive } from 'vue'
import { VAceEditor } from 'vue3-ace-editor';

//import "ace-builds/webpack-resolver";
// 加了这个【import "ace-builds/webpack-resolver";】可能会报错
//（若报错 则需要安装node.js的一个包 就是主题）
// 命令：npm install --save-dev file-loader

import 'ace-builds/src-noconflict/mode-json';
import 'ace-builds/src-noconflict/theme-chrome';
import 'ace-builds/src-noconflict/ext-language_tools';

//ace编辑器配置
const aceConfig = reactive({
    lang: 'json', //解析json
    theme: 'chrome', //主题
    arr: [
        /*所有主题*/
        "ambiance",
        "chaos",
        "chrome",
        "clouds",
        "clouds_midnight",
        "cobalt",
        "crimson_editor",
        "dawn",
        "dracula",
        "dreamweaver",
        "eclipse",
        "github",
        "gob",
        "gruvbox",
        "idle_fingers",
        "iplastic",
        "katzenmilch",
        "kr_theme",
        "kuroir",
        "merbivore",
        "merbivore_soft",
        "monokai",
        "mono_industrial",
        "pastel_on_dark",
        "solarized_dark",
        "solarized_light",
        "sqlserver",
        "terminal",
        "textmate",
        "tomorrow",
        "tomorrow_night",
        "tomorrow_night_blue",
        "tomorrow_night_bright",
        "tomorrow_night_eighties",
        "twilight",
        "vibrant_ink",
        "xcode",
    ],
    readOnly: false, //是否只读
    options: {
        enableBasicAutocompletion: true,
        enableSnippets: true,
        enableLiveAutocompletion: true,
        tabSize: 2,
        showPrintMargin: false,
        fontSize: 13
    }
});

//form
const dataForm = reactive({
    textareashow: '{"A":"A1"}'
});

const jsonError = (e) => {
    console.log(`JSON字符串错误：${e.message}`);
}

// JSON格式化
const jsonFormat = () => {
    try {
        dataForm.textareashow = JSON.stringify(JSON.parse(dataForm.textareashow), null, 2)
    } catch (e) {
        jsonError(e)
    }
};

// JSON压缩
const jsonNoFormat = () => {
    try {
        dataForm.textareashow = JSON.stringify(JSON.parse(dataForm.textareashow))
    } catch (e) {
        jsonError(e)
    }
}
</script>


<style scoped>
.content{
    padding-top: 20px;
}
.el-button{
    margin-left: 20px;
}
</style>

效果：

说明：这里我们不需要主题其他啥的，只需要简单的功能实现即可，代码简化一下：

<template>
    <div class='content'>
        <el-button @click="jsonFormat">格式化</el-button>
        <el-button @click="jsonNoFormat">压缩</el-button>
        <v-ace-editor v-model:value="dataForm.textareashow" @init="jsonFormat" lang="json"
                      :readonly="aceConfig.readOnly" style="height:300px;margin-top: 20px;" class="ace-editor" />
    </div>
</template>
<script setup>
import { reactive } from 'vue'
import { VAceEditor } from 'vue3-ace-editor';

//ace编辑器配置
const aceConfig = reactive({
    lang: 'json', //解析json
    readOnly: false, //是否只读
});
//form
const dataForm = reactive({
    textareashow: '{"A":"A1","B":"B1"}'
});
const jsonError = (e) => {
    console.log(`JSON字符串错误：${e.message}`);
}
// JSON格式化
const jsonFormat = () => {
    try {
        dataForm.textareashow = JSON.stringify(JSON.parse(dataForm.textareashow), null, 2)
    } catch (e) {
        jsonError(e)
    }
};
// JSON压缩
const jsonNoFormat = () => {
    try {
        dataForm.textareashow = JSON.stringify(JSON.parse(dataForm.textareashow))
    } catch (e) {
        jsonError(e)
    }
}
</script>
<style scoped>
.content{
    padding-top: 20px;
}
.el-button{
    margin-left: 20px;
}
</style>

效果：

实例效果：