js截取过长标题

      <c:forEach items="${list }" var="nationalNews">
                  ·[国际]<A href="/cam/news.do?method=show&id=${nationalNews.id }" target="_blank">
                  <script type="text/javascript">
                    str = '${nationalNews.title }'
                    if (str.length <= 20)
                      document.write(str);
                    else
                      document.write(str.substr(0, 20) + '...');
                  </script>
            </c:forEach>

 

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