CODE EXAMPLE FOR JAVASCRIPT

react-map-multidimensional-array

const { useState, Fragment } = React;

function Category({ category }) {
  return (
    <div className="category">
      {
        Object.entries(category).map(([categoryName, values]) => {
         return (
            <Fragment>
            <h3>{categoryName}</h3>
            <Fragment>
            {values.map(({image, name}) => (
                <Fragment>
                <a href={`/categorypage`} className='sub-category'>
                    <img src={image} alt="" />
                    <p className='name'>{name}</p>
                </a>
                </Fragment>
            ))}
            </Fragment>
            </Fragment>
          )
        })
      }
    </div>
  )
}

const App = () => {
  const categories = [{ 'Gadgets': [ { 'name': 'iphone', 'image': '/assets/images/iphone.png', }, { 'name': 'samsung', 'image': '/assets/images/samsung.jpg', }, ] }, { 'Books': [ { 'name': 'Fiction', 'image': '/assets/images/book-1.jpg', }, { 'name': 'education', 'image': '/assets/images/book-2.jpg', }, ] }];

  return (
    <Fragment>
      {categories.map((category) => (<Category category={category} />))}
    </Fragment>)
}

ReactDOM.render(
  <App />,
  document.getElementById("root")
)