getElement*s*ByTagName (plural). If it still doesn't work, tell us what browser you work on and its version. The code I pasted works on IE 7 and FF 3+.
On Sep 17, 9:34 pm, Ana <[email protected]> wrote: > Hi Cerebrus, > > In the line > --- > var chBoxes = tvNodes.getElementByTagName("input") > --- > > I had this error message: object doesn't support this property or > method. =( > > On Sep 17, 5:20 am, Cerebrus <[email protected]> wrote: > > > > > Using the same principle I demonstrated in the thread (http:// > > groups.google.com/group/dotnetdevelopment/browse_thread/thread/ > > 99e294a7d64c4034/), we can study the rendered HTML of a TreeView and > > accordingly select/deselect all checkbox elements in the rendered DOM. > > > Syntax highlighted version at <http://dotnetdevelopment.pastebin.com/ > > f225f061b> > > --- > > <%@ Page Language="VB" AutoEventWireup="false" > > CodeFile="Default.aspx.vb" Inherits="_Default" %> > > > <html xmlns="http://www.w3.org/1999/xhtml";> > > <head runat="server"> > > <title>Untitled Page</title> > > <script type="text/javascript" language="javascript"> > > function ToggleCheckBoxes(check) > > { > > var tvID = "<%= TreeView1.ClientID %>".concat("n0Nodes"); > > var tvNodes = document.getElementById(tvID); > > var chkBoxes = tvNodes.getElementsByTagName("input"); > > for (var i = 0; i < chkBoxes.length; i++) > > { > > var chk = chkBoxes[i]; > > if (chk.type == "checkbox") > > { > > chk.checked = check; > > } > > } > > } > > </script> > > </head> > > <body> > > <form id="form1" runat="server"> > > <asp:TreeView ID="TreeView1" ShowCheckBoxes="Leaf" runat="server"> > > <Nodes> > > <asp:TreeNode Text="Parent1" Expanded="true"> > > <asp:TreeNode Text="Child1" Checked="true"> > > <asp:TreeNode Text="Child2" Checked="true" /> > > </asp:TreeNode> > > <asp:TreeNode Text="Child3" /> > > <asp:TreeNode Text="Child4" /> > > </asp:TreeNode> > > </Nodes> > > </asp:TreeView> > > <a href="javascript:void(0)" onclick="ToggleCheckBoxes > > (true);">Check all</a> > > <br /> > > <a href="javascript:void(0)" onclick="ToggleCheckBoxes > > (false);">Uncheck all</a> > > </form> > > </body> > > </html> > > --- > > > HTH, > > Cerebrus. > > > On Sep 17, 3:34 am, Ana <[email protected]> wrote: > > > > Hi, > > > > I have a TreeView and I'm showing checkboxes only for the leaves. I > > > want to include two LinkButtons in the page where the user can click > > > to select all/none checkboxes. How do I do this is JavaScript? Please, > > > be as detailed as possible, as I'm not very used with JavaScript. > > > > Thanks a lot, > > > > Ana- Hide quoted text - > > - Show quoted text -
