加载更多按钮数据未更新 nextPage未更新

<!DOCTYPE html>
<html><head>
    <meta charset="UTF-8">
    <title>慕课书评网</title>
    <meta name="viewport" content="width=device-width,initial-scale=1.0, maximum-scale=1.0,user-scalable=no">
    <link rel="stylesheet" href="./resources/bootstrap/bootstrap.css">
    <link rel="stylesheet" href="./resources/raty/lib/jquery.raty.css">
    <script src="./resources/jquery.3.3.1.min.js"></script>
    <script src="./resources/bootstrap/bootstrap.min.js"></script>
    <script src="./resources/art-template.js"></script>
    <script src="./resources/raty/lib/jquery.raty.js"></script>
    <style>
        .highlight {
            color: red !important;
        }
        a:active{
            text-decoration: none!important;
        }
    </style>
    <style>
        .container {
            padding: 0px;
            margin: 0px;
        }
        .row {
            padding: 0px;
            margin: 0px;
        }
        .col- * {
            padding: 0px;
        }
    </style>
    <script type="text/html" id="tpl">
        <a href="/book/{{bookId}}" style="color: inherit">
            <div class="row mt-2 book">
                <div class="col-4 mb-2 pr-2">
                    <img class="img-fluid" src="{{cover}}}">
                </div>
                <div class="col-8  mb-2 pl-0">
                    <h5 class="text-truncate">{{bookName}}</h5>
                    <div class="mb-2 bg-light small  p-2 w-100 text-truncate">{{author}}</div>
                    <div class="mb-2 w-100">{{subTitle}}</div>
                    <p>
                        <span class="stars" data-score="{{evaluationScore}}" title="gorgeous"></span>
                        <span class="mt-2 ml-2">{{evaluationScore}}</span>
                        <span class="mt-2 ml-2">{{evaluationQuantity}}人已评</span>
                    </p>
                </div>
            </div>
        </a>
        <hr>
    </script>
   <script>
       $.fn.raty.defaults.path="./resources/raty/lib/images";
       function loadMore(isReset){
           if(isReset == true){
               $("nextPage").val(1);
           }
           let nextPage = $("nextPage").val();
           $.ajax({
               url : "/books",
               data : {"page":nextPage},
               type : "get",
               dataType : "json",
               success:function(json){
                   console.info(json);
                   let list = json.records;
                   for(let i = 0; i < list.length; i++){
                       let book = json.records[i];
                       let html = template("tpl",book);
                       console.info(html);
                       $("#bookList").append(html);
                   }
                   $(".stars").raty({readOnly:true});
                   if(json.current < json.pages){
                       $("#nextPage").val(parseInt(json.current) + 1);
                       $("#btnMore").show();
                       $("#divNoMore").hide();
                   }else{
                       $("#btnMore").hide();
                       $("#divNoMore").show();
                   }
               }
           })
       }
       $(function(){
          loadMore(true);
       })
       //btnMore
       $(function (){
           $("#btnMore").click(function (){
               loadMore();
           })
           $(".category").click(function (){
               $(".category").removeClass("highlight");
               $(".category").addClass("text-black-50");
               $(this).addClass("highlight"); //hyperlink
           })
           $(".order").click(function (){
               $(".order").removeClass("highlight");
               $(".order").addClass("text-black-50");
               $(this).addClass("highlight"); //hyperlink
           })
       })
   </script>
</head>
<body>
<div class="container">
    <nav class="navbar navbar-light bg-white shadow mr-auto">
        <ul class="nav">
            <li class="nav-item">
                <a href="/">
                    <img src="https://m.imooc.com/static/wap/static/common/img/logo2.png" class="mt-1" style="width: 100px">
                </a>
            </li>
        </ul>
                    <a href="/login.html" class="btn btn-light btn-sm">
                <img style="width: 2rem;margin-top: -5px" class="mr-1" src="./images/user_icon.png">登录
            </a>
    </nav>
    <div class="row mt-2">
        <div class="col-8 mt-2">
            <h4>热评好书推荐</h4>
        </div>
        <div class="col-8 mt-2">
                <span data-category="-1" style="cursor: pointer" class="highlight  font-weight-bold category">全部</span>
            <#list categories as category>
            <a style="cursor: pointer" data-category="${category.categoryId}" class="text-black-50 font-weight-bold category">${category.categoryName}</a>
            <#if  category_has_next>|</#if>
            </#list>
        </div>
        <div class="col-8 mt-2">
            <span data-order="quantity" style="cursor: pointer" class="order highlight  font-weight-bold mr-3">按热度</span>
            <span data-order="score" style="cursor: pointer" class="order text-black-50 mr-3 font-weight-bold">按评分</span>
        </div>
    </div>
    <div class="d-none">
        <input type="hidden" id="nextPage" value="2">
        <input type="hidden" id="categoryId" value="-1">
        <input type="hidden" id="order" value="quantity">
    </div>
    <div id="bookList">
    
    </div>
    <button type="button" id="btnMore" data-next-page="1" class="mb-5 btn btn-outline-primary btn-lg btn-block">
        点击加载更多...
    </button>
    <div id="divNoMore" class="text-center text-black-50 mb-5" style="display: none;">没有其他数据了</div>
</div>
</body></html>

晓舟 2022-07-17

源自：SSM开发社交网站 4-5 实现图书列表分页查询