jsp标签-05-05

jsp if标签 test=“boolean”

<c:if test="判断语句">
</c:if>

jjsp if else 语句

<c:choose>
  <c:when test="判断语句">
    
  </c:when>
  <c:other>
  
  </c:other>
</c:choose>

<!--相当于-->
${判断语句:a?b}

<c:when test="${detail == 0}">
<!--而不是下面这样-->
<c:when test="detail == 0">

例如：

<c:if test="${detail != 0}">
  <c:choose>
    <c:when test="${detail  == 1}">
      <button id="returnCar" class="btn green c-save-btn">还车</button>
    </c:when>
    <c:otherwise>
      <button type="submit" id="saveCallCarBtn" class="btn green c-save-btn">保存  
      </button>
      <button type="button" id="restting" class="btn green c-save-btn"
                                            onclick="history.go(-1)">返回
      </button>
    </c:otherwise>
   </c:choose>
  </c:if>