Пагинция на основе массива

let data = Array(100).fill(0).map((d,i) => Math.random().toString(36).substring(2)); 
let count = 5; 
let current = 0; 
let max = Math.floor(data.length/count) - (data.length%count?0:1); 
 
page(0); 
 
function page(n) { 
  current = Math.min(Math.max(0, current+n), max); 
  let cc = current*count; 
  let show = data.slice(cc, cc + count) 
  document.querySelector('#count').innerHTML = `${cc+1}-${cc+count} / ${data.length}`; 
  document.querySelector('#result').innerHTML = show.map(d => `<div>${d}</div>`).join(''); 
}

div#result div { 
  border:1px solid;  
  margin:3px; 
  width: 120px; 
}

<button onclick='page(-1)'>&lt;</button> 
<span id="count"></span> 
<button onclick='page(+1)'>&gt;</button> 
<div id="result"></div>