JQuery - Select asp object

If it is possible to se开发者_C百科lect an asp object like asp:Label by JQuery?

Thanks a lot.

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There are 3 main ways of selecting an element in jQuery.

By Id

$('#<%=lbl.ClientID%>');

By css Class

$('.className');

By attribute or tag type

$('input[name=lblName]');

Refer to this link for more ways of selecting an element How do i use jQuery selectors?

Hope this help

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A coworker of mine wrote a post on how to extend jQuery to do exactly what you're wanting. The result is the ability select an asp control like this:

$(":asp(txtName)")

He accomplishes this by basically adding the following function:

jQuery.expr[':'].asp = function(elem, i, match) {
    return (elem.id && elem.id.match(match[3] + "$"));
}

For a full explanation, please see his post here: Extending jQuery to Select ASP Controls

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If you have the example below:

  <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

You can access it with jquery with:

var label = $("[id$=_Label1]");

The id is the key.

Also the down-slash is optional.

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Well all the asp controls will be finally rendered as HTML controls by ASP.NET.

Like asp:textbox rendered as input type text. So you can use iQuery to select them.

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Yes it is. If you have label with some id. For example you can select this label with

$('#Lbl1')

If you are using MasterPage you'll probably have to append some text infront of id..

$('#ContentPlaceHolder1_Lbl1')

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you can add class to the lable and access it

    <asp:Label ID="Label1" runat="server" Text="Label" CssClass="lblTest"></asp:Label>

$(document).ready(function () {
      $('.lblTest')///code

}

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$("#<%= YourLabelID.ClientID %>")