• 拥抱Vue，抛弃jQuery

    做阶梯价销售提报系统着实被自己的代码恶心了一把，jQuery这个曾经无比优秀的框架对于日益变化的需求也显得有点力不从心。抽空研究了一下vue，觉得不能比jQuery好更多，相见恨晚，含泪推荐~~
    下面看两个页面，一个是jQuery实现版本，另一个是vue实现版本。后端接口一模一样。

    jQuery版
    <!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <title>毛利活动列表</title>
    <link rel="stylesheet" href="/discount/submit/static/layui/css/layui.css" media="all">
    <link rel="stylesheet" href="/discount/submit/static/css/style.css">
    <style>
        body{margin: 10px;}
    </style>
</head>
<body>
<div class="layui-form">
    <table class="layui-table" id="eventListTable">
        <colgroup>
            <col width="60">
            <col>
            <col>
            <col>
        </colgroup>
        <thead>
        <tr>
            <th></th>
            <th>活动ID</th>
            <th>活动名称</th>
            <th>行业</th>
            <th>本月准入交易额</th>
            <th>交易额增幅指标</th>
            <th>佣金收入增幅指标</th>
            <th>生效日期</th>
        </tr>
        </thead>
        <tbody>
        <!--
        <tr>
            <td>
                <input type="checkbox" name="" lay-skin="primary">
            </td>
            <td>123456</td>
            <td>活动名称A</td>
            <td>
                <i class="layui-icon layui-btn layui-btn-mini apollo-label">足浴</i>
            </td>
            <td>45500</td>
            <td>20%</td>
            <td>
                20%
            </td>
            <td>
                2017-07
            </td>
        </tr>
        -->
        </tbody>
    </table>
</div>
<div id="pageBar"></div>
<blockquote class="layui-elem-quote" id="selectedQuote" selectedEventId="" selectedEventName="" commissionAmountRiseIndex="" style="border-left: 5px solid #FF5722;">
    未选择任何活动
</blockquote>
<button class="layui-btn layui-btn-danger" id="closeButton">确定</button>
<script src="/discount/submit/static/js/date-util.js"></script>
<script src="/discount/submit/static/js/jquery-3.2.1.min.js"></script>
<script src="/discount/submit/static/layui/layui.js"></script>
<script src="/discount/submit/static/js/event-list.js"></script>
 
</body>
</html>

    var form;
var laypage;
 
function queryEvents(page) {
    $.ajax({
        type: "GET",
        url: "/discount/submit/queryEvents",
        dataType: "json",
        data: {
            page: page
        },
        success: function(data) {
            $("#eventListTable tbody").empty();
            var page = data.page;
            var pageSize = data.pageSize;
            var recordCount = data.recordCount;
            var pageCount = data.pageCount;
            laypage({
                cont: 'pageBar' //分页容器的id
                ,pages: pageCount //总页数
                ,skin: '#FF5722' //自定义选中色值
                ,curr: page
                //,skip: true //开启跳页
                ,jump: function(obj, first){
                    if(!first){
                        //layer.msg('第'+ obj.curr +'页');
                        queryEvents(obj.curr);
                    }
                }
            });
            $("#pageBar").find("div").append("<span class='layui-laypage-total'>" + "共" + recordCount + "条记录" + "</span>");
            var eventList = data.records;
            if (eventList == null || eventList.length == 0) {
                //无数据
                var tr = $("<tr></tr>");
                tr.append("<td colspan='8'>未查询到数据</td>");
                $("#EventListTable tbody").append(tr);
                return;
            }
            //var eventList = data.eventList;
 
            var selectedEventId =  $("#selectedQuote").attr("selectedEventId");
            var poiIdListStr = "";
            for (var i = 0; i < eventList.length; i++) {
                var tr = $("<tr></tr>");
                var eventEndTime = new Date(eventList[i].eventEndTime);
                var timeout = (new Date()) > eventEndTime;//是否过期
                if (timeout) {
                    tr.append("<td>过期</td>");
                    //tr.append("<td><i class='layui-icon audit-rejected-label timeout-label'>&#x1007;</i></td>");
                } else {
                    if (eventList[i].id == selectedEventId) {
                        tr.append("<td><input type='checkbox' lay-skin='primary' name='selectedEvent' checked></td>");
                    } else {
                        tr.append("<td><input type='checkbox' lay-skin='primary' name='selectedEvent'></td>");
                    }
                }
                tr.append("<td>" + eventList[i].id + "</td>");
                tr.append("<td>" + eventList[i].eventName + "</td>");
 
                var pOISecondCategoryTd = $("<td></td>");
                var accessAmountTd = $("<td></td>");
                var amountRiseIndexTd = $("<td></td>");
                var commissionRiseIndexTd = $("<td></td>");
 
                var eventConfigDTOList = eventList[i].eventConfigDTOList;
                if (eventConfigDTOList != null) {
                    for (var j = 0; j < eventConfigDTOList.length; j++) {
                        if (eventConfigDTOList[j].attributeKey == "POISecondCategory") {
                            //行业
                            poiIdListStr += eventConfigDTOList[j].attributeValue;
                            poiIdListStr += ",";
                            pOISecondCategoryTd.append(eventConfigDTOList[j].attributeValue);
                        } else if (eventConfigDTOList[j].attributeKey == "AccessAmount") {
                            //本月准入交易额
                            accessAmountTd.append(eventConfigDTOList[j].attributeValue);
                        } else if (eventConfigDTOList[j].attributeKey == "AmountRiseIndex") {
                            //交易额增幅指标
                            var amountRiseIndex = eventConfigDTOList[j].attributeValue;
                            amountRiseIndex = (Number(amountRiseIndex) * 100).toFixed(2);
                            amountRiseIndexTd.append(amountRiseIndex + "%");
                        } else if (eventConfigDTOList[j].attributeKey == "CommissionAmountRiseIndex") {
                            //佣金收入增幅指标
                            var commissionAmountRiseIndex = eventConfigDTOList[j].attributeValue;
                            commissionAmountRiseIndex = (Number(commissionAmountRiseIndex) * 100).toFixed(2)
                            commissionRiseIndexTd.append(commissionAmountRiseIndex + "%");
                        }
                    }
                }
                tr.append(pOISecondCategoryTd);
                tr.append(accessAmountTd);
                tr.append(amountRiseIndexTd);
                tr.append(commissionRiseIndexTd);
 
                //生效日期
                if (eventList[i].eventBeginTime == null) {
                    tr.append("<td></td>");
                } else {
                    tr.append("<td>" + new Date(eventList[i].eventBeginTime).format("yyyy-MM-dd hh:mm:ss") + "</td>");
                }
                $("#eventListTable tbody").append(tr);
            }
            //重新渲染页面
            form.render();
            queryPoiName(poiIdListStr);
 
            $(".layui-form-checkbox").click(function () {
                var checked = $(this).hasClass("layui-form-checked");
                if (checked) {
                    var selectedEventId = $(this).parent().next().text();
                    var selectedEventName = $(this).parent().next().next().text();
                    var accessAmount = $(this).parent().next().next().next().next().text();//准入门槛
                    var amountRiseIndex = $(this).parent().next().next().next().next().next().text();//交易额增幅
                    amountRiseIndex = Number(amountRiseIndex.substr(0, amountRiseIndex.length - 1)) / 100;
                    var commissionAmountRiseIndex = $(this).parent().next().next().next().next().next().next().text();//佣金收入增幅指标
                    commissionAmountRiseIndex = Number(commissionAmountRiseIndex.substr(0, commissionAmountRiseIndex.length - 1)) / 100;
                    $("#selectedQuote").attr("selectedEventId", selectedEventId);
                    $("#selectedQuote").attr("selectedEventName", selectedEventName);
                    $("#selectedQuote").attr("accessAmount", accessAmount);
                    $("#selectedQuote").attr("amountRiseIndex", amountRiseIndex);
                    $("#selectedQuote").attr("commissionAmountRiseIndex", commissionAmountRiseIndex);
                    $("#selectedQuote").text("已选择活动：" + selectedEventName);
                    //取消其他选中项
                    $(".layui-form-checked").removeClass("layui-form-checked");
                    //保持自己为选中状态
                    $(this).addClass("layui-form-checked");
                } else {
                    $("#selectedQuote").attr("selectedEventId", "0");
                    $("#selectedQuote").attr("selectedEventName", "");
                    $("#selectedQuote").attr("accessAmount", "0");
                    $("#selectedQuote").attr("amountRiseIndex", "0");
                    $("#selectedQuote").attr("commissionAmountRiseIndex", "0");
                    $("#selectedQuote").text("未选择任何活动");
                }
            });
        }
    });
}
 
function queryPoiName(poiIdListStr) {
    $.ajax({
        type: "GET",
        url: "/discount/submit/queryPoiNameByIdList",
        dataType: "json",
        data: {
            poiIdListStr: poiIdListStr
        },
        success: function (data) {
            data.forEach(function(element) {
                //console.log(element);
                for (var i = 0; i < $("#eventListTable").find("tbody").find("tr").length; i++) {
                    var poiId = $("#eventListTable").find("tbody").find("tr").eq(i).find("td")[3].innerHTML;
                    if (poiId == element.key) {
                        $("#eventListTable").find("tbody").find("tr").eq(i).find("td")[3].innerHTML = element.value;
                    }
                }
            });
        },
        error: function () {
            console.log("查询门店POI名称失败");
        }
    });
}
 
layui.use(['layer', 'form', 'laypage', 'element'], function(){
    var layer = layui.layer;
    form = layui.form();
    laypage = layui.laypage;
    var element = layui.element();
 
    //初始化已选择的门店
    $("#selectedQuote").attr("selectedEventId", parent.$("#eventIdTd").attr("selectedEventId"));
    $("#selectedQuote").attr("amountRiseIndex", parent.$("#eventIdTd").attr("amountRiseIndex"));//交易额增幅指标
    $("#selectedQuote").attr("selectedEventName", parent.$("#eventIdTd").attr("selectedEventName"));
    $("#selectedQuote").attr("accessAmount", parent.$("#turnoverOfLastMonthTd").attr("accessAmount"));
    $("#selectedQuote").attr("commissionAmountRiseIndex", parent.$("#eventIdTd").attr("commissionAmountRiseIndex"));
    if (parent.$("#eventIdTd").attr("selectedEventId") != "0") {
        $("#selectedQuote").text("已选择活动：" + parent.$("#eventIdTd").attr("selectedEventId") + " " + parent.$("#eventIdTd").attr("selectedEventName"));
    }
 
    //默认页面初始加载时自动查询第一页的数据
    queryEvents(1);
 
    var index = parent.layer.getFrameIndex(window.name); //获取窗口索引
 
    //关闭页面
    $('#closeButton').on('click', function(){
        var selectedEventId =  $("#selectedQuote").attr("selectedEventId");
        var selectedEventName =  $("#selectedQuote").attr("selectedEventName");
        var accessAmount = $("#selectedQuote").attr("accessAmount");
        var amountRiseIndex = $("#selectedQuote").attr("amountRiseIndex");
        var chooseEventButton = parent.$("#eventIdTd button");
        var commissionAmountRiseIndex = $("#selectedQuote").attr("commissionAmountRiseIndex");
        parent.$("#eventIdTd").empty();
        parent.$("#eventIdTd").append(chooseEventButton);
        if (selectedEventId != "0") {
            parent.$("#eventIdTd").prepend(selectedEventName + "  ");
            parent.$("#eventIdTd").attr("selectedEventId", selectedEventId);
            parent.$("#eventIdTd").attr("selectedEventName", selectedEventName);
            parent.$("#eventIdTd").attr("amountRiseIndex", amountRiseIndex);
            parent.$("#turnoverOfLastMonthTd").attr("accessAmount", accessAmount);
            parent.$("#eventIdTd").attr("commissionAmountRiseIndex", commissionAmountRiseIndex);
            parent.checkAccessRights();
        } else {
            parent.$("#eventIdTd").prepend("<i class='layui-icon' style='font-size: 14px; color: #FF5722;'>&#x1007;未选择活动</i>");
            parent.$("#eventIdTd").attr("selectedEventId", "0");
            parent.$("#eventIdTd").attr("selectedEventName", "");
            parent.$("#eventIdTd").attr("amountRiseIndex", "0");
            parent.$("#turnoverOfLastMonthTd").attr("accessAmount", "0");
        }
        parent.layer.close(index);
    });
 
});
    vue版
    <!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <title>毛利活动列表</title>
    <link rel="stylesheet" href="/discount/submit/static/layui/css/layui.css" media="all">
    <link rel="stylesheet" href="/discount/submit/static/css/style.css">
    <style>
        body{margin: 10px;}
    </style>
</head>
<body id="event-list">
<div class="layui-form">
    <table class="layui-table">
        <colgroup>
            <col width="60">
            <col>
            <col>
            <col>
        </colgroup>
        <thead>
        <tr>
            <th></th>
            <th>活动ID</th>
            <th>活动名称</th>
            <th>行业</th>
            <th>本月准入交易额</th>
            <th>交易额增幅指标</th>
            <th>佣金收入增幅指标</th>
            <th>生效日期</th>
        </tr>
        </thead>
        <tbody>
            <tr v-if="eventList.length == 0">
                <td colspan="8">
                    未查询到数据
                </td>
            </tr>
            <tr v-for="event in eventList">
                <td>
                    <input v-if="eventId == event.id" checked="checked" type="checkbox" name="" lay-skin="primary">
                    <input v-if="eventId != event.id" type="checkbox" name="" lay-skin="primary">
                </td>
                <td>{{event.id}}</td>
                <td>{{event.eventName}}</td>
                <td>
                    <#--<i class="layui-icon layui-btn layui-btn-mini apollo-label">足浴</i>-->
                        {{getConfig(event.eventConfigDTOList, 'POISecondCategory')}}
                </td>
                <td>{{getConfig(event.eventConfigDTOList, 'AccessAmount')}}</td>
                <td>
                    {{
                    (Number(getConfig(event.eventConfigDTOList, 'AmountRiseIndex')) * 100).toFixed(2) + '%'
                    }}
                </td>
                <td>
                    {{
                    (Number(getConfig(event.eventConfigDTOList, 'CommissionAmountRiseIndex')) * 100).toFixed(2) + '%'
                    }}
                </td>
                <td>
                    {{(new Date(event.addTime)).format("yyyy-MM-dd hh:mm:ss")}}
                </td>
            </tr>
 
        </tbody>
    </table>
</div>
<div id="pageBar"></div>
<blockquote class="layui-elem-quote" id="selectedQuote" selectedEventId="{{eventId}}" selectedEventName="{{eventName}}" commissionAmountRiseIndex="{{commissionAmountRiseIndex}}" style="border-left: 5px solid #FF5722;">
    <span v-if="eventId == 0">未选择任何活动</span>
    <span v-if="eventId != 0">已选择活动：{{eventName}}</span>
</blockquote>
<button class="layui-btn layui-btn-danger" id="closeButton">确定</button>
<script src="/discount/submit/static/js/date-util.js"></script>
<script src="/discount/submit/static/js/jquery-3.2.1.min.js"></script>
<script src="/discount/submit/static/layui/layui.js"></script>
<#--<script src="/discount/submit/static/js/event-list.js"></script>-->
<script src="http://apps.bdimg.com/libs/vue/1.0.8/vue.min.js"></script>
<script>
    var layer;
    var form;
    var laypage;
    var element;
    var app = new Vue({
        el: '#event-list',
        data: {
            eventList: [],
            eventId: 0,
            eventName: "",
            commissionAmountRiseIndex: 0
        },
        methods: {
            getConfig: function (eventConfigDTOList, key) {
                for (var i = 0; i < eventConfigDTOList.length; i++) {
                    if (eventConfigDTOList[i].attributeKey == key) {
                        return eventConfigDTOList[i].attributeValue;
                    }
                }
                return 0;
            },
            Number: function (str) {
                return Number(str);
            }
        }
    });
 
    function queryEvents(page) {
        $.ajax({
            type: "GET",
            url: "/discount/submit/queryEvents",
            dataType: "json",
            data: {
                page: page
            },
            success: function (data) {
                app.eventList = data.records;
                var page = data.page;
                var pageSize = data.pageSize;
                var recordCount = data.recordCount;
                var pageCount = data.pageCount;
                laypage({
                    cont: 'pageBar' //分页容器的id
                    ,pages: pageCount //总页数
                    ,skin: '#FF5722' //自定义选中色值
                    ,curr: page
                    //,skip: true //开启跳页
                    ,jump: function(obj, first){
                        if(!first){
                            //layer.msg('第'+ obj.curr +'页');
                            queryEvents(obj.curr);
                        }
                    }
                });
 
                setTimeout(function () {
                    form.render();
                    $(".layui-form-checkbox").click(function () {
                        var checked = $(this).hasClass("layui-form-checked");
                        if (checked) {
                            var selectedEventId = $(this).parent().next().text().trim();
                            app.eventId = selectedEventId;
                            var selectedEventName = $(this).parent().next().next().text().trim();
                            app.eventName = selectedEventName;
                            var commissionAmountRiseIndex = $(this).parent().next().next().next().next().next().next().text().trim();//佣金收入增幅指标
                            commissionAmountRiseIndex = Number(commissionAmountRiseIndex.substr(0, commissionAmountRiseIndex.length - 1)) / 100;
                            app.commissionAmountRiseIndex = commissionAmountRiseIndex;
                            //取消其他选中项
                            $(".layui-form-checked").removeClass("layui-form-checked");
                            //保持自己为选中状态
                            $(this).addClass("layui-form-checked");
                        } else {
                            app.eventId = 0;
                            app.eventName = "";
                            app.commissionAmountRiseIndex = 0;
                        }
                    });
                }, 200 )
            }
        });
    }
    layui.use(['layer', 'form', 'laypage', 'element'], function() {
        layer = layui.layer;
        form = layui.form();
        laypage = layui.laypage;
        element = layui.element();
 
        queryEvents(1);
    });
 
</script>
</body>
</html>
    小结

    功能上，vue版比jQuery版少了查询poi分类名称的功能，代码量约30行。

    jQuery版js代码行数：214

    vue版js代码行数：90+30=120

    可见实现同样的功能，vue版比jQuery版代码里少了近50%。而且vue不用关心数据模型与页面同步的问题，只要更新了数据，页面会立即同步更新，简直不能更省心。

    本次项目中js代码量约2650行，其中大量的代码都是为了更新数据模型与页面的对应关系。写代码时要时刻关心页面是否显示了最新的数据，虐心！！！

    今后项目中将尽量避免使用jQuery
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  • 原文地址：https://www.cnblogs.com/umgsai/p/7055523.html
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