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HTML

              
                <div class="pagination">
  <ul> <!--pages or li are comes from javascript --> </ul>
</div>
              
            
!

CSS

              
                @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400;500;600;700&display=swap');
*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body{
  display: flex;
  align-items: center;
  justify-content: center;
  background: #20B2AA;
  min-height: 100vh;
  padding: 10px;
}
.pagination ul{
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  background: #fff;
  padding: 8px;
  border-radius: 50px;
  box-shadow: 0px 10px 15px rgba(0,0,0,0.1);
}
.pagination ul li{
  color: #20B2AA;
  list-style: none;
  line-height: 45px;
  text-align: center;
  font-size: 18px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: all 0.3s ease;
}
.pagination ul li.numb{
  list-style: none;
  height: 45px;
  width: 45px;
  margin: 0 3px;
  line-height: 45px;
  border-radius: 50%;
}
.pagination ul li.numb.first{
  margin: 0px 3px 0 -5px;
}
.pagination ul li.numb.last{
  margin: 0px -5px 0 3px;
}
.pagination ul li.dots{
  font-size: 22px;
  cursor: default;
}
.pagination ul li.btn{
  padding: 0 20px;
  border-radius: 50px;
}
.pagination li.active,
.pagination ul li.numb:hover,
.pagination ul li:first-child:hover,
.pagination ul li:last-child:hover{
  color: #fff;
  background: #20B2AA;
}
              
            
!

JS

              
                // selecting required element
const element = document.querySelector(".pagination ul");
let totalPages = 20;
let page = 10;

//calling function with passing parameters and adding inside element which is ul tag
element.innerHTML = createPagination(totalPages, page);
function createPagination(totalPages, page){
  let liTag = '';
  let active;
  let beforePage = page - 1;
  let afterPage = page + 1;
  if(page > 1){ //show the next button if the page value is greater than 1
    liTag += `<li class="btn prev" onclick="createPagination(totalPages, ${page - 1})"><span><i class="fas fa-angle-left"></i> Prev</span></li>`;
  }

  if(page > 2){ //if page value is less than 2 then add 1 after the previous button
    liTag += `<li class="first numb" onclick="createPagination(totalPages, 1)"><span>1</span></li>`;
    if(page > 3){ //if page value is greater than 3 then add this (...) after the first li or page
      liTag += `<li class="dots"><span>...</span></li>`;
    }
  }

  // how many pages or li show before the current li
  if (page == totalPages) {
    beforePage = beforePage - 2;
  } else if (page == totalPages - 1) {
    beforePage = beforePage - 1;
  }
  // how many pages or li show after the current li
  if (page == 1) {
    afterPage = afterPage + 2;
  } else if (page == 2) {
    afterPage  = afterPage + 1;
  }

  for (var plength = beforePage; plength <= afterPage; plength++) {
    if (plength > totalPages) { //if plength is greater than totalPage length then continue
      continue;
    }
    if (plength == 0) { //if plength is 0 than add +1 in plength value
      plength = plength + 1;
    }
    if(page == plength){ //if page is equal to plength than assign active string in the active variable
      active = "active";
    }else{ //else leave empty to the active variable
      active = "";
    }
    liTag += `<li class="numb ${active}" onclick="createPagination(totalPages, ${plength})"><span>${plength}</span></li>`;
  }

  if(page < totalPages - 1){ //if page value is less than totalPage value by -1 then show the last li or page
    if(page < totalPages - 2){ //if page value is less than totalPage value by -2 then add this (...) before the last li or page
      liTag += `<li class="dots"><span>...</span></li>`;
    }
    liTag += `<li class="last numb" onclick="createPagination(totalPages, ${totalPages})"><span>${totalPages}</span></li>`;
  }

  if (page < totalPages) { //show the next button if the page value is less than totalPage(20)
    liTag += `<li class="btn next" onclick="createPagination(totalPages, ${page + 1})"><span>Next <i class="fas fa-angle-right"></i></span></li>`;
  }
  element.innerHTML = liTag; //add li tag inside ul tag
  return liTag; //reurn the li tag
}
              
            
!
999px

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