HTMLSelectElement: item() method

The HTMLSelectElement.item() method returns the Element corresponding to the HTMLOptionElement whose position in the options list corresponds to the index given in the parameter, or null if there are none.

In JavaScript, using the array bracket syntax with an unsigned long, like selectElt[index] is equivalent to selectElt.namedItem(index).

item(index)
// or collection[index]

<form>
  <select id="myFormControl">
    <option id="o1">Opt 1</option>
    <option id="o2">Opt 2</option>
  </select>
</form>

// Returns the HTMLOptionElement representing #o2
elem1 = document.forms[0]["myFormControl"][1];