react.js every nth item add opening tag or closing tag

Question

I\'m having trouble with this logic since react/jsx does not allow for non closing tags to be added to an array/child component. For example with bootstrap css I want to add

Answer 1

render() {
   const rows = array_chunk(this.props.columns, 4)
   return (
     {
       rows.map((row) => (
         

         {
           row.map((col) => (
             
{ col }
           ))
         }
         
       ))
     }
   )
}

An example array_chunk (I recommend that you use lodash)

module.exports = function chunks(arr, size) {
  if (!Array.isArray(arr)) {
    throw new TypeError('Input should be Array');
  }

  if (typeof size !== 'number') {
    throw new TypeError('Size should be a Number');
  }

  var result = [];
  for (var i = 0; i < arr.length; i += size) {
    result.push(arr.slice(i, size + i));
  }

  return result;
};