Vue uses CodeMirrorr+json-lint to implement editable and automatically formatted Json-Editor components

Json-Editor is base on CodeMirrorr. Lint base on json-lint.

The old rules first come to an effect picture

Let's take a look at the implementation steps

1. Install CodeMirrorr, jsonlint

npm install codemirror
npm install jsonlint

2. Write Json-Editor components

Create a new JsonEditor folder and index file in the following location. The

entire contents of the index file are as follows:

<template>
  <div class="json-editor">
    <textarea ref="textarea" />
  </div>
</template>

<script>
import CodeMirror from 'codemirror'
import 'codemirror/addon/lint/lint.css'
import 'codemirror/lib/codemirror.css'
import 'codemirror/theme/rubyblue.css'
require('script-loader!jsonlint')
import 'codemirror/mode/javascript/javascript'
import 'codemirror/addon/lint/lint'
import 'codemirror/addon/lint/json-lint'

export default {
    
    
  name: 'JsonEditor',
  /* eslint-disable vue/require-prop-types */
  props: ['value'],
  data() {
    
    
    return {
    
    
      jsonEditor: false
    }
  },
  watch: {
    
    
    value(value) {
    
    
      const editorValue = this.jsonEditor.getValue()
      if (value !== editorValue) {
    
    
        this.jsonEditor.setValue(JSON.stringify(this.value, null, 2))
      }
    }
  },
  mounted() {
    
    
    // CodeMirror.fromTextArea()中第一个参数是DOM元素，而且必须是textarea元素；第二个参数是可选配置项
    this.jsonEditor = CodeMirror.fromTextArea(this.$refs.textarea, {
    
    
      lineNumbers: true,
      mode: 'application/json',
      gutters: ['CodeMirror-lint-markers'],
      theme: 'rubyblue',
      lint: true
    })

    this.jsonEditor.setValue(JSON.stringify(this.value, null, 2))
    this.jsonEditor.on('change', cm => {
    
    
      this.$emit('changed', cm.getValue())
      this.$emit('input', cm.getValue())
    })
  },
  methods: {
    
    
    getValue() {
    
    
      return this.jsonEditor.getValue()
    },
  }
}
</script>

<style scoped>
.json-editor{
    
    
  height: 100%;
  position: relative;
}
.json-editor >>> .CodeMirror {
    
    
  height: auto;
  min-height: 300px;
}
.json-editor >>> .CodeMirror-scroll{
    
    
  min-height: 300px;
}
.json-editor >>> .cm-s-rubyblue span.cm-string {
    
    
  color: #F08047;
}
.addbtn{
    
    
  margin-bottom: 15px;
  margin-left: 30px;
}
</style>

3. Use the json-editor component to implement your own logic, I will not put my own business code, the following is a small demo for reference

<template>
  <div class="components-container">
    <div class="editor-container">
      <json-editor ref="jsonEditor" v-model="value" />
    </div>
  </div>
</template>

<script>
import JsonEditor from '@/components/JsonEditor'

const jsonData = '[{"items":[{"market_type":"forexdata","symbol":"XAUUSD"},{"market_type":"forexdata","symbol":"UKOIL"},{"market_type":"forexdata","symbol":"CORN"}],"name":""},{"items":[{"market_type":"forexdata","symbol":"XAUUSD"},{"market_type":"forexdata","symbol":"XAGUSD"},{"market_type":"forexdata","symbol":"AUTD"},{"market_type":"forexdata","symbol":"AGTD"}],"name":"贵金属"},{"items":[{"market_type":"forexdata","symbol":"CORN"},{"market_type":"forexdata","symbol":"WHEAT"},{"market_type":"forexdata","symbol":"SOYBEAN"},{"market_type":"forexdata","symbol":"SUGAR"}],"name":"农产品"},{"items":[{"market_type":"forexdata","symbol":"UKOIL"},{"market_type":"forexdata","symbol":"USOIL"},{"market_type":"forexdata","symbol":"NGAS"}],"name":"能源化工"}]'

export default {
    
    
  name: 'JsonEditorDemo',
  components: {
    
     JsonEditor },
  data() {
    
    
    return {
    
    
      value: JSON.parse(jsonData)
    }
  }
}
</script>

<style scoped>
.editor-container{
    
    
  position: relative;
  height: 100%;
}
</style>

https://github.com/PanJiaChen/vue-element-admin/, thanks to Mr. Pan for providing us with such a good background integration system, if you need it, you can take a look at it yourself