ajax sub page to communicate back to the parent page

问题

i have a parent page that calls a sub page in a div.

the parent page has a text box

<input name="txtTicketNo" placeholder="Ticket #"  type="text" value="" class="textbox" readonly="readonly" id="txtTicketNo">

when the child page is called it queries the DB and gets the new record ID which lets says is 1271. so in the child page my code piece looks like this.

<input type="hidden" name="sub_tIDi" id="sub_tIDi" value="<%=oRs(0)%>">

Now i want this 1271 to be written into txtTicketNo in the parent page.

This is what i have tried.

var stID;
stID = document.getElementById('sub_tIDi');
opener.document.NewTicket.txtTicketNo.value = stID.value;

the code runs without error, but there is no value in the text box of the parent page.

appreciate your help.

Thanks

来源：https://stackoverflow.com/questions/23517861/ajax-sub-page-to-communicate-back-to-the-parent-page