How to render a Object in React?

Question

I want to render a Object .

My Object is:

const ObjectTest = {
        1: {
            id : 1,
            name:\'ABC\'
                 


        

Answer 1

Data is an object so directly we can't use map on that, so use Object.keys or Object.entries to get the array first, then use map on that to create ui items.

Using Object.keys:

_renderObject(){
    return Object.keys(ObjectTest).map(obj, i) => {
        return (
            <div>
                id is: {ObjectTest[obj].id} ;
                name is: {ObjectTest[obj].name}
            </div>
        )
    })
}

Using Object.entries:

const ObjectTest = {
    1: {
        id : 1,
        name:'ABC'
    },
    3: {
        id: 3,
        name:'DEF'
    }
}

class App extends React.Component{

	_renderObject(){
		return Object.entries(ObjectTest).map(([key, value], i) => {
			return (
				<div key={key}>
					id is: {value.id} ;
					name is: {value.name}
				</div>
			)
		})
	}

	render(){
		return(
			<div>
				{this._renderObject()}
			</div>
		)
	}
}

ReactDOM.render(<App/>, document.getElementById('app'))

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>

<div id='app'/>

Check this answer also: How to loop an object in ReactJS?

Answer 2

In react you can render your wish answer in browser screen by below code

import React from 'react';


const ObjectTest = {
  1: {
      id : 1,
      name:'ABC'
  },
  3: {
      id: 3,
      name:'DEF'
  }
}

class App extends React.Component {

   constructor(props) {
      super(props);
   };

   render() {
      return (
         <div>
         {
            Object.keys(ObjectTest).map((value,index)=>{
               <p>id is {ObjectTest[value].id} ; name is {ObjectTest[value].name}</p>
            });
         }
         </div>
      );
   }
}

export default App;

Answer 3

I wonder why it seems that almost every one is using Object.keys!

Object.values(ObjectTest).map((row_, index) =>
    <tr>
    {Object.values(row_).map(item => <td>{item}</td>)}
    </tr>
)}

Sample Data:

const ObjectTest = {
        1: {
            id : 1,
            name:'ABC'
        },
        3: {
            id: 3,
            name:'DEF'
        }
}

Answer 4

const ObjectTest = {
        1: {
            id : 1,
            name:'ABC'
        },
        3: {
            id: 3,
            name:'DEF'
        }
}
render(){
   return (
         <div>
            Object.keys(ObjectTest).map( (key)=> {
              return <div>
                 <span>"Id is:"{key}<span>
                 <span>"Name is:"{ObjectTest[key].name}<span>
              </div>
            })
         </div>
   )
}