I'm trying to complete this code I have a list of 30 items. I want to show randomly: 2 elements between 1 and 10, 4 between 10 and 20 and 6 between 20 and 30. The code I show can only show the first two elements between 1 and 10...what can I do to show the other elements?
var list = document.getElementById("items"),
newlist = document.getElementById("shuffle");
function shuffle(items)
{
var cached = items.slice(0,10), temp, i = cached.length, rand;
while(--i)
{
rand = Math.floor(i * Math.random());
temp = cached[rand];
cached[rand] = cached[i];
cached[i] = temp;
}
return cached;
}
function shuffleNodes()
{
var nodes = list.children, i = 0;
nodes = Array.prototype.slice.call(nodes);
nodes = shuffle(nodes);
list.innerHTML = "";
while(i < 2)
{
list.appendChild(nodes[i]);
++i;
}
}
window.onload = shuffleNodes;<dl id="items">
<dd>1. item.<br></dd>
<dd>2. item.<br></dd>
<dd>3. item.<br></dd>
<dd>4. item.<br></dd>
<dd>5. item.<br></dd>
<dd>6. item.<br></dd>
<dd>7. item.<br></dd>
<dd>8. item.<br></dd>
<dd>9. item.<br></dd>
<dd>10. item.<br></dd>
<dd>11. item.<br></dd>
<dd>12. item.<br></dd>
<dd>13. item.<br></dd>
<dd>14. item.<br></dd>
<dd>15. item.<br></dd>
<dd>16. item.<br></dd>
<dd>17. item.<br></dd>
<dd>18. item.<br></dd>
<dd>19. item.<br></dd>
<dd>20. item.<br></dd>
<dd>21. item.<br></dd>
<dd>22. item.<br></dd>
<dd>23. item.<br></dd>
<dd>24. item.<br></dd>
<dd>25. item.<br></dd>
<dd>26. item.<br></dd>
<dd>27. item.<br></dd>
<dd>28. item.<br></dd>
<dd>29. item.<br></dd>
<dd>30. item.<br></dd>
</dl>