js分页控制,解决new出多个对象

参考文档:https://www.cnblogs.com/libo0125ok/p/7815597.html

目的:通过ajax请求数据实现页脚分页控制,参考文档很详细,我根据自己的项目需要,对原函数修改了部分。实现大中屏适应显示(我得项目只有两个规格,是web和我inform结合的项目),遇到的主要问题是:点击查询按钮时会new出多个对象,就有了对参考文档函数的改造

页脚效果

css就不贴了,自己写就行
html:

<body class="container " style="background-color:#F0F2F5;width:100%;padding-left:10px;padding-right:10px;">
    <div id="messagediv">---查询成功---</div>
    <div id="minoperations">操作</div>
    <div class="condition">
        <div class="condition_items">
            <div class="condition_item">
                <input id="query_name" type="text" class="form_text" value="" placeholder="搜索关键词" />
            </div>
            <div class="condition_item">
                <div class="form_selected" style="position:relative">
                    <input type="text" readonly="readonly" placeholder="请选择员工" class="form_text" />
                    <i class="fa fa-angle-down" style="position:absolute;right:10px;top:10px;"></i>

                    <ul class="form_selected_ul">
                        <li>aaa </li>
                        <li>111111</li>
                        <li>22222</li>
                        <li>3333</li>
                    </ul>
                </div>
            </div>

            <button id="search_btn" class="form_btn form_btn_default" style="position:absolute;right:10px;"><i class="fa fa-jack-o-lantern"></i>开始查询</button>
        </div>
    </div>
    <div class="diytbpanel">
        <div class="diytbbar">
            <button class="form_btn form_btn_default"><i class="fa fa-pen"></i>设置</button>
            <button class="form_btn"><i class="fa fa-file-download"></i>同步</button>
            <button class="form_btn"><i class="fa fa-asl-interpreting"></i>重发</button>
            <button class="form_btn"><i class="fa fa-sad-cry"></i>诊断</button>
            <button class="form_btn"><i class="fa fa-dashboard"></i>导出</button>
        </div>

        <div class="diylistpanel">
            <div class="diylist_item">
                <div class="item_img"></div>
                <div class="item_text"></div>
                <div class="item_oprea"></div>
            </div>
            <div class="diylist_item"></div>
            <div class="diylist_item"></div>
        </div>

        <div class="no-data">未查询到数据</div>
        <br />
        <div style="height:50px;width:100%;margin-top:-20px;">
            <div class="page">
                <div class="page-l" id="page_l" style="float: left;">
                    <span>总共 <span id="total_count"></span> 条</span>
                    <div class="page-size-box">
                        <span>每页显示</span>
                        <select id="page_size" disabled="disabled">
                            <option value="12">12</option>
                            <option value="30">30</option>
                        </select>条
                    </div>
                </div>
                <div class="page-r">
                    <ul id="page_ul" class="page-ul"></ul>
                </div>
            </div>
        </div>
    </div>

js代码:

        //隐藏条件查询条
        var ominopera = document.getElementById('minoperations');
        var ocondition = document.getElementsByClassName('condition')[0];
        var boolopeta = true;
        ominopera.onclick = function () {
            if (boolopeta) {
                ocondition.style.display = "block";
                boolopeta = false;
            } else {
                ocondition.style.display = "none";
                boolopeta = true;
            }
        }

        var opage_size = document.getElementById('page_size');
        var pageConfig;
        var pageIng;
        var pageIndex = 1;
        var pageSize = opage_size.value;

        window.onload = function () {
            var ostartwidth = document.body.clientWidth;
            if (ostartwidth <= 1200) {
                opage_size.value = 12;
            }
            if (ostartwidth >= 1920) {
                opage_size.value = 30;
            }


            //翻页控制
            //分页参数(参数名固定不可变)
            pageConfig = {
                pageSize: opage_size.value,           //每页条数(不设置时,默认为10)
                prevPage: '上页',             //上一页(不设置时,默认为:<)
                nextPage: '下页',             //下一页(不设置时,默认为:>)
                firstPage: '首页',            //首页(不设置时,默认为:<<)
                lastPage: '末页',             //末页(不设置时,默认为:>>)
                degeCount: 3,                //当前页前后两边可显示的页码个数(不设置时,默认为3)
                ellipsis: true               //是否显示省略号按钮(不可点击)(true:显示,false:不显示,不设置时,默认为显示)
            };
            getList(pageConfig);  //初始加载就查询

            //点击查询按钮
            $('#search_btn').click(function () {
                getList(pageConfig);
                ocondition.style.display = "none";
            });
            window.onresize = function () {
                var owidth = document.body.clientWidth;
                if (owidth >= 1920) {
                    opage_size.value = 30;
                    getList(pageConfig);
                }
                else if (owidth <= 1200) {
                    opage_size.value = 12;
                    getList(pageConfig);
                }
            }
        };

        //查询列表数据
        function getList(pageConfig) {
            var query_name = document.getElementById('query_name').value;
            //初始化Paging实例(pageConfig参数也可以为空对象,此时就是默认设置)
            if (!pageIng) {
                pageIng = new Paging(pageConfig, function (pageIndex, pageSize) {
                    get(pageIndex, pageSize, query_name);
                });
            } else {
                opage_size = document.getElementById('page_size');
                get(pageIndex, pageSize, query_name);
            }
        }

        function get(pageIndex, pageSize, query_name) {
            opage_size = document.getElementById('page_size');
            pageSize = opage_size.value
            var query_name = document.getElementById('query_name').value;

            $.ajax({
                url: '../../product/getProductlst', //接口地址
                type: 'get',
                data: {
                    pageIndex: pageIndex,
                    pageSize: pageSize,
                    query_name: query_name
                },
                async: true,
                success: function (res) {

                    var omessagediv = document.getElementById('messagediv');
                    omessagediv.style.display = "block";
                    setTimeout(function () { omessagediv.style.display = "none"; }, 2000)
                    var jsonresult = eval('(' + res + ')')
                    if (jsonresult.totalcount > 0) {
                        var html = '';
                        $.each(jsonresult.product, function (i, item) {
                            html += '<div class=\"diylist_item\">';
                            html += '<div class=\"item_img\"><img src=\"https://cbu01.alicdn.com/' + item.photo + ' \" style=\"width:160px;height:160px;\"/></div>';
                            html += '<div class=\"item_text\">' + item.name + '</div>';
                            html += '<div class=\"item_oprea\">' + item.ProductId + '</div>';
                            html += ' </div>';
                        });
                        html += '<div style="clear:both"></div>';
                        $('.diylistpanel').html(html);
                        var totalCount = jsonresult.totalcount;   //接口返回的总条数
                        var totalPage = Math.ceil(totalCount / pageSize);   //根据总条数和每页条数计算总页码数
                        // 调用Paging实例的 initPage()方法生成分页DOM结构
                        pageIng.initPage(totalCount, totalPage, pageIndex);
                        $('.page').show();
                        $('.no-data').hide();
                    } else {  //如果未查询到数据
                        $('.diylistpanel').html('');
                        $('.page').hide();
                        $('.no-data').show();
                    }
                },
                error: function () {
                    alert(3)
                }
            });
        }
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