js实现复选框的全选/全不选

类似下面

前端HTML

<thead>
                    <tr>
                        <th><input type="checkbox" id="all_or_no"   onclick="check_all_no()"></th>
                        <th>序号</th>
                        <th>商品名称</th>
                        <th>商品单价(元)</th>
                        <th>购买数量</th>
                        <th>小计（元）</th>
                        <th>商品操作</th>
                    </tr>
                    </thead>
                    <tbody>
                    {volist name='car' id='car'}
                    <tr>
                        <td>
                            <input type="checkbox" name="car_goods" goods_price="{$car.goods_price}" onclick="total()">
                        </td>
                        <td>{$i}</td>
                        <td>{$car.goods_name}</td>
                        <td>{$car.goods_price}</td>
                        <td>1</td>
                        <td>{$car.goods_price}</td>
                        <td>
                            <div class="btn-group btn-group-sm">
                                <button class="btn btn-danger" type="button">删除</button>
                            </div>
                        </td>
                    </tr>
{/volist}

js方法

//复选框
function check_all_no() {
    var all_or_no =document.getElementById("all_or_no");
    var car_goods =document.getElementsByName("car_goods");

    if (all_or_no.checked) {

            for (var i=0;i<car_goods.length;i++)
                car_goods[i].checked=true;
        }
    else
        {
            for (var i = 0; i < car_goods.length; i++)
                car_goods[i].checked= false;
        }
   

}

当页面刷新时全部变为没选（js）

$(function(){
    var all_or_no = document.getElementById("all_or_no");
    var car_goods = document.getElementsByName("car_goods");
    for (var i=0;i<car_goods.length;i++)
        car_goods[i].checked=false;
    all_or_no.checked=false;

});