复选框全选效果，根据单个复选框的选择情况确定全选复选框是否被选

复选框全选与全不选效果  

逻辑：复选框的checked属性与复选框全选效果对应起来，全选复选框checked：true 时，全部复选框checked：true；

全选框checked：false 时，全部复选框checked：false

function selectAll(){
    var oInput = document.getElementsByName("cartCheckBox");
    for(var i=0;i<oInput.length;i++){
        oInput[i].checked=document.getElementById("allCheckBox").checked;
    }
}

　　

根据单个复选框的选择情况确定全选复选框是否被选

逻辑：全选复选框的checked属性对应全部单选复选框的checked；当全部单选框的checked：true时，全选复选框checked：true；

当全部单选框的某一个复选框checked：false时，全选复选框checked：false。

function selectSingle(){
    var k=0;
    var oInput = document.getElementsByName("cartCheckBox");
    for(var i=0;i<oInput.length;i++){
        if(oInput[i].checked==false){
            k=1;
            break;
        }
    }
    if(k==0){
        document.getElementById("allCheckBox").checked=true;
    }
    else{
        document.getElementById("allCheckBox").checked=false;
    }
}

　HTML代码

<div id="content" style=" 800px;height: 600px;margin: 10px auto 5px auto;clear: both;">
    <table width="100%" border="0" cellspacing="0" cellpadding="0" id="shopping">
        <form action="" method="post" name="myform">
            <tr>
                <td class="title_1"><input id="allCheckBox" type="checkbox" value="" onclick="selectAll()" />全选</td>
                <td class="title_2" colspan="2">店铺宝贝</td>
                <td class="title_3">获积分</td>
                <td class="title_4">单价（元）</td>
                <td class="title_5">数量</td>
                <td class="title_6">小计（元）</td>
                <td class="title_7">操作</td>
            </tr>
            <tr>
                <td colspan="8" class="line"></td>
            </tr>
            <tr>
                <td colspan="8" class="shopInfo">店铺：<a href="#">纤巧百媚时尚鞋坊</a>    卖家：<a href="#">纤巧百媚</a> <img src="images/taobao_relation.jpg" alt="relation" /></td>
            </tr>
            <tr id="product1">
                <td class="cart_td_1"><input name="cartCheckBox" type="checkbox" value="product1" onclick="selectSingle()" /></td>
                <td class="cart_td_2"><img src="images/taobao_cart_01.jpg" alt="shopping"/></td>
                <td class="cart_td_3"><a href="#">日韩流行风时尚美眉最爱独特米字拼图金属坡跟公主靴子黑色</a><br />
                    颜色：棕色 尺码：37<br />
                    保障：<img src="images/taobao_icon_01.jpg" alt="icon" /></td>
                <td class="cart_td_4">5</td>
                <td class="cart_td_5">138.00</td>
                <td class="cart_td_6"><img src="images/taobao_minus.jpg" alt="minus" onclick="changeNum('num_1','minus')" class="hand"/> <input id="num_1" type="text"  value="1" class="num_input" readonly="readonly"/> <img src="images/taobao_adding.jpg" alt="add" onclick="changeNum('num_1','add')"  class="hand"/></td>
                <td class="cart_td_7"></td>
                <td class="cart_td_8"><a href="javascript:deleteRow('product1');">删除</a></td>
            </tr>

            <tr>
                <td colspan="8" class="shopInfo">店铺：<a href="#">香港我的美丽日记</a>    卖家：<a href="#">lokemick2009</a> <img src="images/taobao_relation.jpg" alt="relation" /></td>
            </tr>
            <tr id="product2">
                <td class="cart_td_1"><input name="cartCheckBox" type="checkbox" value="product2" onclick="selectSingle()" /></td>
                <td class="cart_td_2"><img src="images/taobao_cart_02.jpg" alt="shopping"/></td>
                <td class="cart_td_3"><a href="#">chanel/香奈尔/香奈尔炫亮魅力唇膏3.5g</a><br />
                    保障：<img src="images/taobao_icon_01.jpg" alt="icon" /> <img src="images/taobao_icon_02.jpg" alt="icon" /></td>
                <td class="cart_td_4">12</td>
                <td class="cart_td_5">265.00</td>
                <td class="cart_td_6"><img src="images/taobao_minus.jpg" alt="minus" onclick="changeNum('num_2','minus')" class="hand"/> <input id="num_2" type="text"  value="1" class="num_input" readonly="readonly"/> <img src="images/taobao_adding.jpg" alt="add" onclick="changeNum('num_2','add')"  class="hand"/></td>
                <td class="cart_td_7"></td>
                <td class="cart_td_8"><a href="javascript:deleteRow('product2');">删除</a></td>
            </tr>

            <tr>
                <td colspan="8" class="shopInfo">店铺：<a href="#">实体经营</a>    卖家：<a href="#">林颜店铺</a> <img src="images/taobao_relation.jpg" alt="relation" /></td>
            </tr>
            <tr id="product3">
                <td class="cart_td_1"><input name="cartCheckBox" type="checkbox" value="product3"  onclick="selectSingle()"/></td>
                <td class="cart_td_2"><img src="images/taobao_cart_03.jpg" alt="shopping"/></td>
                <td class="cart_td_3"><a href="#">蝶妆海??蓝清滢粉底液10#（象牙白）</a><br />
                    保障：<img src="images/taobao_icon_01.jpg" alt="icon" /> <img src="images/taobao_icon_02.jpg" alt="icon" /></td>
                <td class="cart_td_4">3</td>
                <td class="cart_td_5">85.00</td>
                <td class="cart_td_6"><img src="images/taobao_minus.jpg" alt="minus" onclick="changeNum('num_3','minus')" class="hand"/> <input id="num_3" type="text"  value="1" class="num_input" readonly="readonly"/> <img src="images/taobao_adding.jpg" alt="add" onclick="changeNum('num_3','add')"  class="hand"/></td>
                <td class="cart_td_7"></td>
                <td class="cart_td_8"><a href="javascript:deleteRow('product3');">删除</a></td>
            </tr>

            <tr>
                <td colspan="8" class="shopInfo">店铺：<a href="#">红豆豆的小屋</a>    卖家：<a href="#">taobao豆豆</a> <img src="images/taobao_relation.jpg" alt="relation" /></td>
            </tr>
            <tr id="product4">
                <td class="cart_td_1"><input name="cartCheckBox" type="checkbox" value="product4" onclick="selectSingle()" /></td>
                <td class="cart_td_2"><img src="images/taobao_cart_04.jpg" alt="shopping"/></td>
                <td class="cart_td_3"><a href="#">相宜促销专供 大S推荐 最好用的LilyBell化妆棉</a><br />
                    保障：<img src="images/taobao_icon_01.jpg" alt="icon" /></td>
                <td class="cart_td_4">12</td>
                <td class="cart_td_5">12.00</td>
                <td class="cart_td_6"><img src="images/taobao_minus.jpg" alt="minus" onclick="changeNum('num_4','minus')" class="hand"/> <input id="num_4" type="text"  value="2" class="num_input" readonly="readonly"/> <img src="images/taobao_adding.jpg" alt="add" onclick="changeNum('num_4','add')"  class="hand"/></td>
                <td class="cart_td_7"></td>
                <td class="cart_td_8"><a href="javascript:deleteRow('product4');">删除</a></td>
            </tr>

            <tr>
                <td  colspan="3"><a href="javascript:deleteSelectRow()"><img src="images/taobao_del.jpg" alt="delete"/></a></td>
                <td colspan="5" class="shopend">商品总价（不含运费）：<label id="total" class="yellow"></label> 元<br />
                    可获积分 <label class="yellow" id="integral"></label> 点<br />
                    <input name=" " type="image" src="images/taobao_subtn.jpg" /></td>
            </tr>
        </form>
    </table>
    <div style="text-align:center;">
        <p>来源:<a href="http://www.mycodes.net/" target="_blank">源码之家</a></p>
    </div>
</div>