js拼接对象里面含数组的json数据？

Question

本人新手，对js了解不深，js拼接对象里面含数组json字符串不知道怎么搞了，求大神指导

数组代码

      var crulearr=[]
      for(var ccode of this.newDB){
        if(ccode.id == this.ipboxid){
          crulearr.push('{"rules":[{"field":"ParentID","op":"equal","value":"'+this.ipboxid+'","type":"int"},{"field":"CarbinCode","op":"equal","value":"'+this.cabincodearr+'","type":"string"}],"op":"and"}')
        }
        else{
          crulearr.push('{"rules":[{"field":"ParentID","op":"equal","value":"'+ccode.id+'","type":"int"},{"field":"CarbinCode","op":"equal","value":"'+ccode.cabincodes+'","type":"string"}],"op":"and"}')
        }

      }
      console.log('row202:'+ JSON.stringify(crulearr))

数组数据如下：

拼json数据代码

      var rules='{"groups":'+ JSON.stringify(crulearr) +',"op":"and"}'
      this.prule=JSON.parse(rules)
      console.log('row222:'+ JSON.stringify(this.prule) )

获取到的数据如下：

想要实现的数据格式：