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jQuery实现购物车计算价格统计功能

2020-05-02 10:38:22  阅读：275  来源： 互联网

标签：jQuery width color tr height foot var 购物车 统计


jQuery实现购物车计算价格统计功能

#功能介绍

进入界面，刷新触发onload方法跳转到JS代码，可以对购物车内商品数量进行增加-减少，商品价格自动统计、当更改商品数量的输入框value值时，整个购物表商品的价格，商品的小计和总计会根据数量发生变化。

话不多说直接上代码


<style type="text/css">
        *{margin:0;padding:0;list-style-type:none;}
        a{color:#666;text-decoration:none;}
        table{border-collapse:collapse;border-spacing:0;border:0;}
        body{color:#666;font:12px/180% Arial, Helvetica, sans-serif, "新宋体";}
        clearfix:after{content:".";display:block;height:0;clear:both;visibility:hidden}
        .clearfix{display:inline-table}
        *html .clearfix{height:1%}
        .clearfix{display:block}
        *+html .clearfix{min-height:1%}
        .fl{float:left;}
        .fr{float:right;}
        .catbox{width:940px;margin:100px auto;}
        .catbox table{text-align:center;width:100%;}
        .catbox table th,.catbox table td{border:1px solid #CADEFF;}
        .catbox table th{background:#e2f2ff;border-top:3px solid #a7cbff;height:30px;}
        .catbox table td{padding:10px;color:#444;}
        .catbox table tbody tr:hover{background:RGB(238,246,255);}
        .checkbox{width:60px;}
        .check-all{ vertical-align:middle;}
        .goods{width:300px;}
        .goods span{width:180px;margin-top:20px;text-align:left;float:left;}
        .goods img{width:100px;height:80px;margin-right:10px;float:left;}
        .price{width:130px;}
        .count{width:90px;}
        .count .add, .count input, .count .reduce{float:left;margin-right:-1px;position:relative;z-index:0;}
        .count .add, .count .reduce{height:23px;width:17px;border:1px solid #e5e5e5;background:#f0f0f0;text-align:center;line-height:23px;color:#444;}
        .count .add:hover, .count .reduce:hover{color:#f50;z-index:3;border-color:#f60;cursor:pointer;}
        .count input{width:50px;height:25px;line-height:15px;border:1px solid #aaa;color:#343434;text-align:center;padding:4px 0;background-color:#fff;z-index:2;}
        .subtotal{width:150px;color:red;font-weight:bold;}
        .operation span:hover,a:hover{cursor:pointer;color:red;text-decoration:underline;}

        .foot{margin-top:0px;color:#666;height:48px;border:1px solid #c8c8c8;border-top:0;background-color:#eaeaea;background-image:linear-gradient(RGB(241,241,241),RGB(226,226,226));position:relative;z-index:8;}
        .foot div, .foot a{line-height:48px;height:48px;}
        .foot .select-all{width:80px;height:48px;line-height:48px;color:#666;text-align:center;}
        .foot .delete{padding-left:10px;}
        .foot .closing{border-left:1px solid #c8c8c8;width:103px;text-align:center;color:#666;font-weight:bold;cursor:pointer;background-image:linear-gradient(RGB(241,241,241),RGB(226,226,226));}
        .foot .closing:hover{background-image:linear-gradient(RGB(226,226,226),RGB(241,241,241));color:#333;}
        .foot .total{margin:0 20px;cursor:pointer;}
        .foot  #priceTotal, .foot #selectedTotal{color:red;font-family:"Microsoft Yahei";font-weight:bold;}
        .foot .selected{cursor:pointer;}
        .foot .selected .arrow{position:relative;top:-3px;margin-left:3px;}
        .foot .selected .down{position:relative;top:3px;display:none;}
        .show .selected .down{display:inline;}
        .show .selected .up{display:none;}
        .foot .selected:hover .arrow{color:red;}
        .foot .selected-view{width:938px;border:1px solid #c8c8c8;position:absolute;height:auto;background:#ffffff;z-index:9;bottom:48px;left:-1px;display:none;}
        .show .selected-view{display:block;}
        .foot .selected-view div{height:auto;}
        .foot .selected-view .arrow{font-size:16px;line-height:100%;color:#c8c8c8;position:absolute;right:330px;bottom:-9px;}
        .foot .selected-view .arrow span{color:#ffffff;position:absolute;left:0px;bottom:1px;}

        #selectedViewList{padding:10px 20px 10px 20px;}
        #selectedViewList div{display:inline-block;position:relative;width:100px;height:80px;border:1px solid #ccc;margin:10px;float:left;}
        #selectedViewList div img{width:100px;height:80px;margin-right:10px;float:left;}
        #selectedViewList div span{display:none;color:#ffffff;font-size:12px;position:absolute;top:0px;right:0px;width:60px;height:18px;line-height:18px;text-align:center;background:#000;cursor:pointer;}
        #selectedViewList div:hover span{display:block;}
    </style>


<script type="text/javascript">
 function getSubtotal(tr) {
	     var cells = tr.cells;
            var price = tr.getElementsByTagName('input')[2]

            var subtotal = cells[6]; //小计td
            var countInput = tr.getElementsByTagName('input')[3]; //数目input
            var span = tr.getElementsByTagName('span')[1]; //-号
            //写入HTML
            subtotal.innerHTML = (parseInt(countInput.value) * parseFloat(price.value)).toFixed(1);
            //如果数目只有一个，把-号去掉
            if (countInput.value == 1) {
                span.innerHTML = '';
            }else{
                span.innerHTML = '-';
            }
        }
          window.onload = function () {
        if (!document.getElementsByClassName) {
            document.getElementsByClassName = function (cls) {
                var ret = [];
                var els = document.getElementsByTagName('*');
                for (var i = 0, len = els.length; i < len; i++) {

                    if (els[i].className.indexOf(cls + ' ') >=0 || els[i].className.indexOf(' ' + cls + ' ') >=0 || els[i].className.indexOf(' ' + cls) >=0) {
                        ret.push(els[i]);
                    }
                }
                return ret;
            }
        }

        var table = document.getElementById('treeTable'); // 购物车表格
        var selectInputs = document.getElementsByClassName('check'); // 所有勾选框
        var checkAllInputs = document.getElementsByClassName('check-all') // 全选框
        var tr = table.children[1].rows; //行
        var selectedTotal = document.getElementById('selectedTotal'); //已选商品数目容器
        var priceTotal = document.getElementById('priceTotal'); //总计
//         var deleteAll = document.getElementById('deleteAll'); // 删除全部按钮
        var selectedViewList = document.getElementById('selectedViewList'); //浮层已选商品列表容器
        var selected = document.getElementById('selected'); //已选商品
        var foot = document.getElementById('foot');

        // 更新总数和总价格，已选浮层
        function getTotal() {
            var seleted = 0;
            var price = 0;
            var HTMLstr = '';
            for (var i = 0, len = tr.length; i < len; i++) {
                if (tr[i].getElementsByTagName('input')[0].checked) {
                    tr[i].className = 'on';
                    seleted += parseInt(tr[i].getElementsByTagName('input')[3].value);
                    price += parseFloat(tr[i].cells[6].innerHTML);
                    HTMLstr += '<div><img src="' + tr[i].getElementsByTagName('img')[0].src + '"><span class="del" index="' + i + '">取消选择</span></div>'
                }
                else {
                    tr[i].className = '';
                }
            }
            selectedTotal.innerHTML = seleted;
            priceTotal.innerHTML = price.toFixed(2);
            selectedViewList.innerHTML = HTMLstr;

            if (seleted == 0) {
                foot.className = 'foot';
            }
        }
        // 计算单行价格
      
        // 点击选择框
        for(var i = 0; i < selectInputs.length; i++ ){
            selectInputs[i].onclick = function () {
                if (this.className.indexOf('check-all') >= 0) { //如果是全选，则吧所有的选择框选中
                    for (var j = 0; j < selectInputs.length; j++) {
                        selectInputs[j].checked = this.checked;
                    }
                }
                if (!this.checked) { //只要有一个未勾选，则取消全选框的选中状态
                    for (var i = 0; i < checkAllInputs.length; i++) {
                        checkAllInputs[i].checked = false;
                    }
                }
                getTotal();//选完更新总计
            }
        }

        // 显示已选商品弹层
        selected.onclick = function () {
            if (selectedTotal.innerHTML != 0) {
                foot.className = (foot.className == 'foot' ? 'foot show' : 'foot');
            }
        }

        //已选商品弹层中的取消选择按钮
        selectedViewList.onclick = function (e) {
            var e = e || window.event;
            var el = e.srcElement;
            if (el.className=='del') {
                var input =  tr[el.getAttribute('index')].getElementsByTagName('input')[0]
                input.checked = false;
                input.onclick();
            }
        }

        //为每行元素添加事件
        for (var i = 0; i < tr.length; i++) {
            //将点击事件绑定到tr元素
            tr[i].onclick = function (e) {
                var e = e || window.event;
                var el = e.target || e.srcElement; //通过事件对象的target属性获取触发元素
                var cls = el.className; //触发元素的class
                var countInout = this.getElementsByTagName('input')[3]; // 数目input
                var value = parseInt(countInout.value); //数目
                //通过判断触发元素的class确定用户点击了哪个元素
                switch (cls) {
                    case 'add': //点击了加号
                        countInout.value = value + 1;
                        getSubtotal(this);
                        break;
                    case 'reduce': //点击了减号
                        if (value > 1) {
                            countInout.value = value - 1;
                            getSubtotal(this);
                        }
                        break;
//                     case 'delete': //点击了删除
//                         var conf = confirm('确定删除此商品吗？');
//                         if (conf) {
//                             this.parentNode.removeChild(this);
//                         }
                        break;
                }
                getTotal();
            }
            // 给单价输入框绑定keyup事件
            tr[i].getElementsByTagName('input')[2].onkeyup = function () {
          
                var val = parseInt(this.value);
                if (isNaN(val) || val <= 0) {
                    val = 1;
                }
                if (this.value != val) {
                    this.value = val;
                }
                getSubtotal(this.parentNode.parentNode); //更新小计
                getTotal(); //更新总数
            }
            
              // 给数量输入框绑定keyup事件
            tr[i].getElementsByTagName('input')[3].onkeyup = function () {
           
                var val = parseInt(this.value);
                if (isNaN(val) || val <= 0) {
                    val = 1;
                }
                if (this.value != val) {
                    this.value = val;
                }
                getSubtotal(this.parentNode.parentNode); //更新小计
                getTotal(); //更新总数
            }
        }
    
        console.log("\u767e\u5ea6\u641c\u7d22\u3010\u7d20\u6750\u5bb6\u56ed\u3011\u4e0b\u8f7d\u66f4\u591aJS\u7279\u6548\u4ee3\u7801");
        // 默认全选
        checkAllInputs[0].checked = true;
        //不全选
//         checkAllInputs[0].checked = false;
        
        
        checkAllInputs[0].onclick();
    }
    </script>
   

<form id="listForm" method="post">
	<table   id="treeTable" class="table table-bordered table-condensed"
			style="table-layout:fixed;width: 100%;height: 100%">
		<thead>
			<tr>
			
			
			<th style="text-align: center;width: 60px;"><label>
                <input class="check-all check" type="checkbox">&nbsp;&nbsp;全选&nbsp;&nbsp;商品名称</label></th>
				<th style="text-align: center;width: 60px;">出库单号</th>
				<th style="text-align: center;width: 60px;">商品标识码</th>
				<th style="text-align: center;width: 60px;">客户</th>
				<th style="text-align: center;width: 60px;">单价(元)</th>
				<th style="text-align: center;width: 60px;">数量</th>
				<th style="text-align: center;width: 60px;">小计</th>
				<th style="text-align: center;width: 60px;">颜色</th>
				<th style="text-align: center;width: 60px;">出库时间</th>
				<th style="text-align: center;width: 60px;">操作员</th>
			</tr>
		</thead>
	
		<tbody>
			
		<c:forEach items="${pageid}" var="psalesorder">
			<tr>
			
<!-- 			商品分类 -->
			 <td style="text-align: center;">
			 <input class="check-one check" type="checkbox" name="checkExe" id="cbx" value="${psalesorder.id}/${psalesorder.count}/${psalesorder.testname}"><img src="" alt="" style="display: none"><span>${psalesorder.testname}</span>
			 </td>
				
<!-- 		         商品编号 -->
				
				<td style="text-align: center;"title="${psalesorder.address.name}">
 <div style="width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${psalesorder.address.name}</div>
				</td>
				
<!-- 			商品标识码 -->
               <td style="text-align: center;">
                  <input name="code1" type="text" id="biaoshi" value="${psalesorder.code}" style="width:100px;margin:0;padding:0;text-align:center;">

             </td>
             
<!-- 			客户 -->

			   <td style="text-align: center;"title="${psalesorder.companyname.name}${psalesorder.clientname.name}">
                  <div style="width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${psalesorder.companyname.name}${psalesorder.clientname.name}</div>
			  </td>
			  
<!--			商品单价-->
              <td style="text-align: center;">
                  <shiro:hasPermission name="cms:psalesorder:edit">
                  <input name="projectsexone" type="text" value="${psalesorder.projectsexone}" style="width:50px;margin:0;padding:0;text-align:center;">
                  </shiro:hasPermission>
               </td>
				
				
				
				
				
<!--		        进货数量-->
              <td style="text-align: center;" class="count">
                 <span class="reduce"></span>
                  <shiro:hasPermission name="cms:psalesorder:edit">
                  <input class="count-input" name="sorts"type="text" value="${psalesorder.count}" style="height: 15px">
                  <input type="hidden" name="ids" value="${psalesorder.id}"/>
				 </shiro:hasPermission>
             <span class="add">+</span>
            </td>


<!--           小计-->
              <td style="text-align: center;">
                  ${psalesorder.count*psalesorder.projectsexone}
             </td>

		      <td style="text-align: center;"title="${psalesorder.phoneone}">
						<shiro:hasPermission name="cms:psalesorder:edit">
						<input name="phoneone" type="text" value="${psalesorder.phoneone}" style="width:50px;margin:0;padding:0;text-align:center;">
						</shiro:hasPermission>
			</td>
		
		     <td style="text-align: center;">
					<fmt:formatDate value="${psalesorder.createDate}" pattern="yyyy-MM-dd"/>
			</td> 
			
			<td style="text-align: center;"title="${psalesorder.createBy.name}">
                   <div style="width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;">${psalesorder.createBy.name}</div>
			</td>
			</tr>
		</c:forEach>
		</tbody>
	</table>
	<div class="pagination" style="color:#999999;text-align: center; ">共   ${listcount}  条记录</div>

	

	    <div class="foot" id="foot">
        <label class="fl select-all"><input type="checkbox" class="check-all check">&nbsp;&nbsp;全选</label>
        <div  style="margin-top: -48px; margin-left: 100px; width: 30px"  οnclick="testdelete()">删除</div>
        
         
        <div style="margin-top: -48px;"class="fr closing" οnclick="updateSort();">保存</div>
        <input type="hidden" id="cartTotalPrice">
        <div style="margin-top: -48px;margin-right: 110px" class="fr total">合计：￥<span id="priceTotal">0</span></div>
        <div style="margin-top: -48px;;margin-right: 240px" class="fr selected" id="selected">已选商品<span id="selectedTotal">&nbsp;&nbsp;0&nbsp;&nbsp;</span>件<span class="arrow up"></span><span class="arrow down"></span></div>
        <div class="selected-view">
            <div id="selectedViewList" class="clearfix"><div><img src="http://www.jq22.com/demo/jquery-guc20151105/images/1.jpg"><span class="del" index="0">取消选择</span></div><div><img src="http://www.jq22.com/demo/jquery-guc20151105/images/2.jpg"><span class="del" index="1">取消选择</span></div><div><img src="http://www.jq22.com/demo/jquery-guc20151105/images/3.jpg"><span class="del" index="2">取消选择</span></div><div><img src="http://www.jq22.com/demo/jquery-guc20151105/images/4.jpg"><span class="del" index="3">取消选择</span></div></div>
            <span class="arrow">◆<span>◆</span></span> </div>
    </div>	
	
	
		</form>

上截图

在这里插入图片描述
2.
在这里插入图片描述

标签：jQuery,width,color,tr,height,foot,var,购物车,统计
来源： https://blog.csdn.net/weixin_37592187/article/details/105857274

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