[英]Setting Value of Label Client Side
I have a web page that has a Folder Picker pop up. 我有一个弹出文件夹选择器的网页。 It allows the user the select a folder on the website, and then track changes to its contents.
它允许用户选择网站上的文件夹,然后跟踪其内容的更改。
I need to pass the value from the pop-up, which is returned to me in JavaScript, and pass that to a server side method. 我需要传递弹出窗口中的值,该弹出窗口在JavaScript中返回给我,并将其传递给服务器端方法。
AJAX is not available for this, as I'm working with SharePoint. 由于我正在使用SharePoint,因此无法使用AJAX。
I get the data I need from a callback in JavaScript, but if I try to set $(control).text(), this doesn't work. 我从JavaScript中的回调中获取了所需的数据,但是如果我尝试设置$(control).text(),则这不起作用。
Can I set the value of a label (rendered as a span) somehow and pass that back onClick? 我可以以某种方式设置标签的值(呈现为跨度)并将其传递回onClick吗?
Current working Code: 目前的工作代码:
$('.tile').on("click", ".LibraryPickerInitiator", function () {
var hiddenField = $(this).siblings('[type=hidden]');
var callback = $.proxy(function (s) { this.val(s); }, hiddenField);
LaunchPickerTreeDialog('CbqPickerSelectListTitle', 'CbqPickerSelectListText', 'websLists', '', '/', '', '', '', '/_layouts/images/smt_icon.gif', '', callback, '', '');
});
Markup: 标记:
<div id="WebSettings" class="WebSettings" runat="server">
<div class="LibraryPickerInitiator">Pick a Library</div>
<asp:HiddenField ID="HiddenField1" runat="server" />
<asp:Label ID="TreePickerLabel" CssClass="PickerPlaceHolder" runat="server" Text="No List Selected"></asp:Label>
<asp:Button ID="SubmitList" runat="server" Text="Get List Data" onclick="SubmitList_Click" />
</div>
Event: 事件:
protected void SubmitList_Click(object sender, EventArgs e)
{
string pickerData = HiddenField1.Value;
}
I see no reason you cannot, I would use $.proxy
when creating the callback to ensure a proper scope: 我认为没有理由你不能,我会在创建回调时使用
$.proxy
以确保适当的范围:
var callback = $.proxy(function (s) {
this.html(s);
}, sisterLabel);
If you add a hidden input to the markup you could change you client code something like this: 如果向标记添加隐藏输入,则可以更改客户端代码,如下所示:
var sibs = $(this).siblings();
var callback = $.proxy(function (s) {
this.label.html(s); // set label text
this.hidden.val(s); // set hidden field val
}, { label: sibs.filter('span'), hidden: sibs.filter(':input:hidden') });
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