<div id="div_room_container" class="lease_room_container">

    <div id="handle_by_Manual" class="room">azaz</div> //人手写在页面上，能触发click

    <div id="A101" class="room">A101</div> //通過ajax生成,无法触发click事件

    <div id="A102" class="room">A102</div> //通過ajax生成,无法触发click事件

    <div id="A103" class="room">A103</div> //通過ajax生成,无法触发click事件

    <div id="A104" class="room">A104</div> //通過ajax生成,无法触发click事件

</div>

$(document).ready(function () {

            $(".room").click(function () {

                alert('OK');

                //alert($(this).html());

            });



            $.ajax({

                type: 'get',

                url: "Ajax_Service/LeaseService.aspx",

                data: 'request_type=getrooms&' + 'roomid=' + '' + '&district=' + 'A' + '&action=' + 'D',

                //data: { roomid: 'aaa', district: 'A', action: 'D' },

                success: function (data) {

                    //$('#div_room_container').empty();

                    var myarray = $.parseJSON(data);

                    $.each(myarray, function (i, item) {

                        $('#div_room_container').append(

                            "<div class='room' id='" + item.roomid + "'>" + item.room_cname + "</div>"

                        );

                    })

                },

                error: function () { alert('ajax failed'); }

            })