javascript - Using jQuery to populate ValidatorHookupControl -

i have following form items:

medications:     <asp:radiobuttonlist id="meds" runat="server" repeatdirection="horizontal">      <asp:listitem value="1">yes (list below)</asp:listitem>      <asp:listitem value="0">no</asp:listitem> </asp:radiobuttonlist>  medication list: <asp:customvalidator id="val_medslist" runat="server" clientvalidationfunction="check_medslist"     onservervalidate="val_medslist_servervalidate" validationgroup="groupsave" validateemptytext="true"    errormessage="required" controltovalidate="medslist" enableclientscript="true"> </asp:customvalidator><br /> <asp:textbox id="medslist" cssclass="jquerymedslisttarget" textmode="multiline" runat="server"      width="500" maxlength="500" wrap="true" rows="3" /> 

the idea if "yes" selected textbox needs filled out , opposite true if "no" selected. in order have "yes"/"no" options trigger custom validator use 'validatorhookupcontrol' such:

validatorhookupcontrol(document.getelementbyid('meds_0'), document.getelementbyid('val_medslist')); validatorhookupcontrol(document.getelementbyid('meds_1'), document.getelementbyid('val_medslist')); 

this works me, become annoying when have more 2 options. created following loop through of options doesn't seem work ("yes" , "no" not trigger custom validator):

$(document).ready(function () {     hookupradiobuttonlisttoval($('input[id^=meds_]'), $('#val_medslist')); });  function hookupradiobuttonlisttoval(rbl, validator) {     $(rbl).each(function () {         validatorhookupcontrol($(this), $(validator));     }); }    

i assume not returning correct type of element $(this) , $(validator) not sure go there.

the final solution ended being

function hookupradiobuttonlisttoval(rbl, validator) {     $(rbl).each(function () {         validatorhookupcontrol(this, $(validator)[0]);     }); } 

this uses idea jbabey shared tweak validator portion. unfortunately if called validatorhookupcontrol(this, validator); typeerror: val.style undefined