checkbox属性

<td><input name="ids" type="checkbox" value="${product.id }"></td>

<script>

//删除操作

        $("#del").click(function() {

            if(confirm("确定删除吗")){

                 var cks=document.getElementsByName("ids");

                    var str="";

                    //拼接所有的图书id

                    for(var i=0;i<cks.length;i++){

                        if(cks[i].checked){

                            str+=str+cks[i].value+",";

                        }

                    }

                    //去掉字符串末尾的‘,’

                    str=str.substring(0, str.length-1);

                 location.href="deleteProdect?strId="+str;

            }

        });

</script>

         <div class="form-group form-inline">

                       每页 <select class="form-control" onchange="changePageSize()" id="changePageSize">

                           <option>2</option>

                           <option>4</option>

                           <option>6</option>

                           <option>8</option>

                           <option>10</option>

                    </select> 条

         </div>

function changePageSize() {

            //获取下拉框的值

            var pageSize = $("#changePageSize").val();

            //向服务器发送请求，改变没页显示条数

            location.href = "${pageContext.request.contextPath}/Orders/findAllOrders?page=1&size="

                    + pageSize;

        }

 $(function () {

            $("#chkAll").click(function () {

                if ($("#chkAll").prop('checked')) {

                    $("input[name='checkbox']").prop("checked", "true");

                } else {

                    $("input[name='checkbox']").removeAttr("checked");

                }

            });

        })

}

var len = $("input[name='checkbox']:checked").length;

$("#username").click(function() {

           $(".div1 span:last-child").css("display","none");

    });

 $("#select").find("option[value='${club.type}']").attr("selected", true);

function isNull(data, span) {

            var reg = RegExp("^[^\\s]+$");

            var value = document.getElementById(data).value

            if (!reg.test(value)) {

                document.getElementById(span).innerText = "请不要输入空格"

                document.getElementById(span).style.color = "red"

            } else {

                document.getElementById(span).innerText = ""

            }

        }

<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>

　　　　　　　　<div class="col-sm-10">

                <input type="date" class="form-control" disabled=true

                       value="<fmt:formatDate value="${club.createdate}" pattern="yyyy-MM-dd"></fmt:formatDate>">

             </div>

　　　　<select class="inp001" id="sProject" name="sProject" >

                            <option value="">-请选择-</option>

                   </select>

 function change() {

            var type = $("#budget").val();

            $.ajax({

                type: "Get",

                url: "${pageContext.request.contextPath}/item/ajaxType/" + type,

                dataType: "json",

                success: function (data) {

                    //清空下拉列表框

                    $("#fProject").empty();

                    $.each(data, function (index, item) {

                        //追加新的子选项

                        $("#fProject").append("<option value=" + item.id + " >" + item.name + "</option>");

                    })

                }

            })

        };