javascript - 单击 anchor 链接时如何在转发器中查找文本框值

Question

我有一个中继器，其中有文本框。现在我想在用户单击链接时获取文本框(txtDestroyQty)的值。

<asp:Repeater ID="rptDestroy" runat="server"  >
    <ItemTemplate>
        <tr>
            <td><%#Eval("productName") %></td>
            <td><%#Eval("ProductId") %></td>
            <td><%#Eval("Attid") %></td>
            <td><%#Eval("vname") %></td>
            <td><%#Eval("PendingQty") %></td>
            <td>
                <asp:TextBox ID="txtDestroyQty" CssClass="txt" runat="server"></asp:TextBox>
                <a href="javascript:Destroy('<%#Eval("vendorId") %>','<%#Eval("ProductId") %>','<%#Eval("Attid") %>')">Destroy</a>
            </td>
        </tr>
    </ItemTemplate>
</asp:Repeater>

我有这个 jQuery:

function Destroy(vid, Pid, Attid) {
    var obj = {};
    obj.vid = vid;
    obj.pid = Pid;
    obj.attid = Attid;
    obj.pendingqty = pendingqty;
    $.ajax({
        type: "POST",
        url: "/stocks/Rejection.aspx/DestroyItem",
        data: JSON.stringify(obj),
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (data) {

            if (data.d == "Y")
                window.location.href = '/stocks/rejection.aspx';
            else
                alert('Not Destroyed');

        },
        error: function (result) {
            alert('went wrong');
        }

    });
}

我试过了

var pendingqty = $('#txtDestroyQty').val();
var value = $(this).closest('tr').find('input.txt').val();

Answer 1

您可以将 this 作为上下文传递:

<a href="javascript:Destroy(this, '<%#Eval("vendorId") %>','<%#Eval("ProductId") %>','<%#Eval("Attid") %>')">Destroy</a>

现在你必须在 js 函数中更改它:

function Destroy(el, vid, Pid, Attid) { // <----get this as el
    var obj = {};
    obj.vid = vid;
    obj.pid = Pid;
    obj.attid = Attid;
    obj.pendingqty = $(el).prev().val(); // now assign it here