required.tag

ajax基础操作实例,无刷添加删除等..

<%@ attribute name="name" required="true" rtexprvalue="true" %>
<%@ attribute name="msg" required="false" rtexprvalue="true" %>
<%@ tag body-content="empty" %>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="da" tagdir="/WEB-INF/tags/dynamic/ajax" %>
<%@ taglib prefix="dfu" tagdir="/WEB-INF/tags/dynamic/forms/util" %>
<%@ taglib prefix="dvu" tagdir="/WEB-INF/tags/dynamic/valid/util" %>

<c:if test="${empty msg}">
    <dvu:useDefaultMsg/>
    <c:set var="msg" value="${defaultValidMsg.required}"/>
</c:if>

<c:set var="outId" value="${name}Required"/>
<dvu:errMsg id="${outId}">
    <c:if test="${formPost && empty param[name]}">
        <c:out value="${msg}"/>
        <dfu:addError name="${name}" msg="${msg}"/>
    </c:if>
</dvu:errMsg>

<script type="text/javascript">
    pageValidators.add(new RequiredValidator(
        <da:jstring value="${formName}"/>, <da:jstring value="${name}"/>,
        <da:jstring value="${outId}"/>, <da:jstring value="${msg}"/>));
</script>