下拉列表默认选中

<select id="sel" name="proSecond.profirsttype.profirstid">
               <c:forEach var="list" items="${listFirst}">
               <option value="${list.profirstid}"><c:out value="${list.typename }"></c:out> </option>
               </c:forEach>
              </select>
              <script>
              function setSelectByValue(
                domSelect,
                strVal) {
               var opts = domSelect.options;
               for ( var i = 0, j = opts.length; i < j; i++)
                if (opts[i].value === strVal)
                 return domSelect.selectedIndex = i;
              }
              setSelectByValue(
                document
                  .getElementById('sel'),
                '${proSecond.profirsttype.profirstid}');
              </script>