Struts1标签logic:present ？解决方案

Struts1标签logic:present ？

JScript code

<script type="text/javascript">          <logic:present name="RESULT">                  <logic:equal name="RESULT" value="saveSuc">                  window.parent.document.getElementById("error_info_message").value=getOperateInfo_("setup_save_suc");                  </logic:equal>                  <logic:equal name="RESULT" value="saveFail">                  window.parent.document.getElementById("error_info_message").value=getOperateInfo_("setup_save_fail");                  </logic:equal>          </logic:present>        </script>

怎么改成一般的，就是不用s1的标签、？

[解决办法]
<%
String space = "" + request.getAttribute("SPACEISEXIST");
%>

<%
if (!space.equals(request.getAttribute("SPACEISEXIST"))) {
%>

<input type="button" id="subBut1" onclick="javascript:onSub();"
value="创建">
<%
}
%>

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