how to use java script in asp.net page

The names of the controls inside a usercontrol get renamed when they're rendered on the page (rt click & ViewSource to see it) so you need to code the field name. You can do this:



var vdp = document.getElementById('<%= dp.ClientID %>');


alert(vdp.value);

Register Java Script with ajax on asp.net page

hi dear
there is a problem which we find when we r using javascript on any page which already use ajax .
we have to register our javascript code with asp.net


but if u still facing error of http request then
place all script and tags which are using <% %> in to asp:placeholder id="" runat="server" scripts asp:placeholder


it will solve ur problem thanks