You should use vue, you should write ueditor as a component

<template>
  <p ref="editor"></p>
</template>

<script>

  import './ueditor.config';
  import './ueditor.all';
  import './lang/zh-cn/zh-cn';


  export default {
    data() {
      return {
        id: parseInt(Math.random()*1000)+'ueditorId',
      };
    },
    props: {
      value: {
        type: String,
        default: null,
      }
    },
    watch: {
      // value: function value(val, oldVal) {
      //   this.editor = UE.getEditor(this.id);
      //   if (val !== null) {
      //     this.editor.setContent(val);
      //   }
      // },
    },
    mounted() {

      var _this = this;
      this.$nextTick(function f1() {
        // 保证 this.$el 已经插入文档

        this.$refs.editor.id = this.id;
        this.editor = UE.getEditor(this.id, this.config);

        this.editor.ready(function f2() {
          this.editor.setContent(this.value==null?'<p></p>':this.value);
          this.editor.addListener("contentChange afterExecCommand", function () {
            const wordCount = _this.editor.getContentLength(true);
            const content = _this.editor.getContent();
            const plainTxt = _this.editor.getPlainTxt();
            _this.$emit('input', { wordCount: wordCount, content: content, plainTxt: plainTxt });
          }.bind(this));

          // this.$emit('ready', this.editor);
        }.bind(this));
      });
    },
  };
</script>