jsp在select中的option中编写if标签

<select onchange="lxx(this)">
<option value="">全部</option>
<option value="水电" <c:if test='${lx=="水电"}'>selected=selected</c:if> >水电</option>
<option value="火电" <c:if test='${lx=="火电"}'>selected=selected</c:if>>火电</option>
<option value="风电" <c:if test='${lx=="风电"}'>selected=selected</c:if>>风电</option>
<option value="光伏" <c:if test='${lx=="光伏"}'>selected=selected</c:if>>光伏</option>
</select>

function updateWczZt(obj) {
        var zt = $(obj).val();
        var msg = '';
        if (zt == '' || zt == null || zt == 'N') {
            msg = "移除误差？";
            zt = "N";
        } else {
            msg = "添加错差？";
            zt = "Y";
        }
        $.ligerDialog.confirm(msg, function(yes) {
            if (yes) {
                    var id = $("input[name='id']").val();
                    var url = __ctx + "/yjdlfh/yjdlfh/yjdlfhzb/updateWczZt.ht";
                    var params = {
                        id : id,
                        zt : zt
                    }
                    $.ajax({
                        url : url,
                        data : params,
                        type : "post",
                        async : true,
                        success : function(rtn) {
                            if (rtn == "true") {
                                $.ligerDialog.success("修改成功");
                                var tjrq = $("input[name='rq']").val();
                                location.href = __ctx
                                        + "/yjdlfh/yjdlfh/yjdlfhzb/edit.ht?tjrq="
                                        + tjrq;
                            } else {
                                $.ligerDialog.alert("修改失败");
                            }
                        },
                        error : function() {
                            $.ligerDialog.alert("修改失败");
                        }
                    });
                }
            });
        
    }

扩展（个人收藏）

@ResponseBody
    @RequestMapping("updateWczZt")
    public String updateWczZt(HttpServletRequest request, HttpServletResponse response) {
        String isSuc = "false";
        Long id = RequestUtil.getLong(request, "id");
        logger.info("id是否为空====" + id);
        String zt = RequestUtil.getStringValues(request, "zt");
        logger.info("zt 是否为空====" + zt);
        Yjdlfhzb e = yjdlfhzbService.getById(id);
        if (e != null) {
            e.setZt(zt);
            yjdlfhzbService.update(e);
            isSuc = "true";
        }
        return isSuc;

    }

扩展2 java

<select onchange="changeState(this,${hydwzdgzjhoneItem.id})">
                        <option value="">未选择</option>
                        <option value="进行中" <c:if test='${hydwzdgzjhoneItem.zt=="进行中"}'>selected=selected</c:if>>进行中</option>
                        <option value="已完成" <c:if test='${hydwzdgzjhoneItem.zt=="已完成"}'>selected=selected</c:if>>已完成</option>
                        <option value="已延期" <c:if test='${hydwzdgzjhoneItem.zt=="已延期"}'>selected=selected</c:if>>已延期</option>
                        <option value="未开展" <c:if test='${hydwzdgzjhoneItem.zt=="风电"}'>selected=selected</c:if>>未开展</option>
                    </select>

复制用html

function changeState(obj,id) {
        var zt = $(obj).val();
       // $.ligerDialog.confirm(msg, function(yes) {
          //  if (yes) {
            //  alert(id);
                    var id = id;
                    var url = __ctx + "/hydlbbzdgz/hydlbbzdgz/hydwzdgzjhone/updateState.ht";
                    var params = {
                        id : id,
                        zt : zt
                    }
                    $.ajax({
                        url : url,
                        data : params,
                        type : "post",
                        async : true,
                        success : function(rtn) {
                            if (rtn == "true") {
                                $.ligerDialog.success("修改成功");
                             //   var tjrq = $("input[name='rq']").val();
                            //    location.href = __ctx  + "/yjdlfh/yjdlfh/yjdlfhzb/edit.ht?tjrq=" + tjrq;
                                location.href = __ctx  + "/hydlbbzdgz/hydlbbzdgz/hydwzdgzjhone/list.ht";
                            
                            } else {
                                $.ligerDialog.alert("修改失败");
                            }
                        },
                        error : function() {
                            $.ligerDialog.alert("修改失败");
                        }
                    });
            //    }
          //  });
        
    }

复制用js

@ResponseBody
    @RequestMapping("updateState")
    public String updateWczZt(HttpServletRequest request, HttpServletResponse response) {
        String isSuc = "false";
        Long id = RequestUtil.getLong(request, "id");
        logger.info("id是否为空====" + id);
        String zt = RequestUtil.getStringValues(request, "zt");
        logger.info("zt 是否为空====" + zt);
        Hydwzdgzjhone e = hydwzdgzjhoneService.getById(id);
        if (e != null) {
            e.setZt(zt);
            hydwzdgzjhoneService.update(e);
            isSuc = "true";
        }
        return isSuc;

    }

复制用java

function() {
        $('.changeState').each(function(){
            var state =  $(this).val();
            var color = "";            
            if(state=="进行中"){
                color="blue";
            }else if(state=="已完成"){
                color="green";
            }else if(state=="已延期"){
                color="red";
            }else if(state=="未开展"){
                color="yellow";
            }
            $(this).css("background-color",color);
            $(this).css("font-size","12px");
            if(color!=""){
                 $(this).css("border","0px");
                $(this).css("color","white");
            }
            
        });
    });

复制用js-根据选中的值添加不同颜色