state={
panelData:[
             { title:"title"
               content:["one",2]
             }
          ]
       }

panelData: [     {title:"title",content:["one",2]} ,
                 {title:"title 2"content:[3,4]}     ]

handlingAddRecipe(){ //this is my update paneldata function
        let contentValue = this.state.recipeContent.join("").split(","); //contentValue = ["content1","content2"]

        this.setState({
          panelData:[{
            title:this.state.recipeTitle,   //title:"title1"
            content:contentValue            //content:contentValue
          }]
        })
        console.log(this.state.panelData)
  }