购物车的jquery插件怎么写

jQuery(function($) { $("#add").on("click", function() { var boxs = $(":checkbox[name='haitai']:checked")if (!boxs.length) { alert("请选择商品！")} else { var bao = ""boxs.each(function(i, dom) { bao += $(dom).attr("value"...

给你个示例吧，应该能帮助到你

这是html

<input id="Button1" type="button" value="button" />

    <table style="width: 100%">

        <tr>

            <td>

                <div style="width:100px height: 100px border: 1px solid #f08080" id="shop">购物车</div>

            </td>

            <td>&nbsp</td>

            <td>&nbsp</td>

        </tr>

        <tr>

            <td style="height: 500px">&nbsp</td>

            <td>&nbsp</td>

            <td>&nbsp</td>

        </tr>

        <tr>

            <td>&nbsp</td>

            <td>&nbsp</td>

            <td>

                <div style="width: 50px height: 50px background-color: #f08080" id="product">

                    商品

                </div>

            </td>

        </tr>

    </table>

这个是jQuery代码：

$(function() {

        $("#Button1").click(function() {

            var shopOffset = $("#shop").offset()

            var cloneDiv = $("#product").clone()

            var proOffset = $("#product").offset()

            cloneDiv.css({ "position": "absolute", "top": proOffset.top, "left": proOffset.left })

            $("#product").parent().append(cloneDiv)

            cloneDiv.animate({

                left: shopOffset.left,

                top: shopOffset.top

            },"slow")

        })

    })

CGPoint point = containerView.contentOffset

CGFloat zy = point.y

CGFloat py = rect.origin.y + rect.size.height

if (py - zy <0) {

return FALSE

}

CGRect screenRect = containerView.frame

CGFloat by = screenRect.size.height + zy

if (rect.origin.y >by) {

return FALSE

}

return TRUE

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