JSFiddle - React, Tailwind, and code Playground
JavaScript
var array = [
'item',
'item',
'item',
'item',
'item',
'item',
'item',
'item',
'item',
'item'
];
var temp=[], newArray=[];
for(i=0;i<array.length;i++){
temp.push(array[i]);
if(temp.length==5){
newArray.push(temp);
temp=[];
}
}
console.log(JSON.stringify(newArray));