[raspin]

Это типа калькулятора приведу весь скрипт, в зависимости от выбранных чекбоксов меняется сумма.

function getOrderStampSum() {
  var sum = 0;
  var sum2 = 0;
  var sum3 = 0;
  var sum4 = 0;
  var sum5 = 0;
  
       if (document.getElementById('100').checked) {sum += 297;} 
  else if (document.getElementById('200').checked) {sum += 421;} 
  else if (document.getElementById('300').checked) {sum += 545;} 
  else if (document.getElementById('400').checked) {sum += 710;} 
  else if (document.getElementById('500').checked) {sum += 834;}
  else if (document.getElementById('600').checked) {sum += 958;}
  else if (document.getElementById('700').checked) {sum += 1123;}
  else if (document.getElementById('800').checked) {sum += 1247;}
  else if (document.getElementById('900').checked) {sum += 1371;}
  else if (document.getElementById('1000').checked) {sum += 1537;}
  
       if (document.getElementById('design1').checked) {sum5 += 0;} 
  else if (document.getElementById('design2').checked) {sum5 += 100;} 
  else if (document.getElementById('design3').checked) {sum5 += 300;} 
  else if (document.getElementById('design4').checked) {sum5 += 500;} 
  
       if (document.getElementById('sides1').checked) {sum3 += 0;} 
  else if (document.getElementById('sides2').checked) {
       if (document.getElementById('100').checked) {sum3 += 120;}
  else if (document.getElementById('200').checked) {sum3 += 187;}
  else if (document.getElementById('300').checked) {sum3 += 255;}
  else if (document.getElementById('400').checked) {sum3 += 345;}
  else if (document.getElementById('500').checked) {sum3 += 413;}
  else if (document.getElementById('600').checked) {sum3 += 480;}
  else if (document.getElementById('700').checked) {sum3 += 570;}
  else if (document.getElementById('800').checked) {sum3 += 638;}
  else if (document.getElementById('900').checked) {sum3 += 705;}
  else if (document.getElementById('1000').checked) {sum3 += 795;}
  }
  
       if (document.getElementById('standart').checked) {sum2 += 0;} 
  else if (document.getElementById('splen').checked) {
	   if (document.getElementById('100').checked) {sum2 += 103;} 
	   if (document.getElementById('200').checked) {sum2 += 165;}
	   if (document.getElementById('300').checked) {sum2 += 226;}
	   if (document.getElementById('400').checked) {sum2 += 309;}
	   if (document.getElementById('500').checked) {sum2 += 371;}
	   if (document.getElementById('600').checked) {sum2 += 433;}
	   if (document.getElementById('700').checked) {sum2 += 516;}
	   if (document.getElementById('800').checked) {sum2 += 578;}
	   if (document.getElementById('900').checked) {sum2 += 639;}
	   if (document.getElementById('1000').checked) {sum2 += 721;}
  }
    else if (document.getElementById('designer').checked) {
	   if (document.getElementById('100').checked) {sum2 += 0;} 
	   if (document.getElementById('200').checked) {sum2 += 0;}
	   if (document.getElementById('300').checked) {sum2 += 0;}
	   if (document.getElementById('400').checked) {sum2 += 0;}
	   if (document.getElementById('500').checked) {sum2 += 0;}
	   if (document.getElementById('600').checked) {sum2 += 0;}
	   if (document.getElementById('700').checked) {sum2 += 0;}
	   if (document.getElementById('800').checked) {sum2 += 0;}
	   if (document.getElementById('900').checked) {sum2 += 0;}
	   if (document.getElementById('1000').checked) {sum2 += 0;}
  }

  else if (document.getElementById('cover').checked) {
	   if (document.getElementById('100').checked) {sum2 += 218;} 
	   if (document.getElementById('200').checked) {sum2 += 349;}
	   if (document.getElementById('300').checked) {sum2 += 481;}
	   if (document.getElementById('400').checked) {sum2 += 656;}
	   if (document.getElementById('500').checked) {sum2 += 787;}
	   if (document.getElementById('600').checked) {sum2 += 918;}
	   if (document.getElementById('700').checked) {sum2 += 1093;}
	   if (document.getElementById('800').checked) {sum2 += 1224;}
	   if (document.getElementById('900').checked) {sum2 += 1356;}
	   if (document.getElementById('1000').checked) {sum2 += 1530;}
  }
  
         if (document.getElementById('krug1').checked) {sum4 += 0;} 
  else if (document.getElementById('krug2').checked) {
       if (document.getElementById('100').checked) {sum4 += 50;}
  else if (document.getElementById('200').checked) {sum4 += 100;}
  else if (document.getElementById('300').checked) {sum4 += 150;}
  else if (document.getElementById('400').checked) {sum4 += 200;}
  else if (document.getElementById('500').checked) {sum4 += 250;}
  }
  
  document.getElementById('order_stamp_sum').innerHTML = sum+sum2+sum3+sum4+sum5;
}

То есть получается, что 30 разных материалов типа 'cover', 'designer' и т.д. Но все в количествах 100, 200, 300 и т.д. Писать вот такую конструкцию 30-40 раз вроде не правильно и грамоздко

else if (document.getElementById('splen').checked) {
	   if (document.getElementById('100').checked) {sum2 += 103;} 
	   if (document.getElementById('200').checked) {sum2 += 165;}
	   if (document.getElementById('300').checked) {sum2 += 226;}
	   if (document.getElementById('400').checked) {sum2 += 309;}
	   if (document.getElementById('500').checked) {sum2 += 371;}
	   if (document.getElementById('600').checked) {sum2 += 433;}
	   if (document.getElementById('700').checked) {sum2 += 516;}
	   if (document.getElementById('800').checked) {sum2 += 578;}
	   if (document.getElementById('900').checked) {sum2 += 639;}
	   if (document.getElementById('1000').checked) {sum2 += 721;}