javascript在回发后无法正常工作

问题描述

在我的Web应用程序iam中，使用以下javascript代码将弹出窗口中的值设置为主窗口.
设置列表框中的值[弹出窗口]

In my web application iam using the following javascript code for to set the values in pop up window to main window.
To set the values in list box[PopUp Window]

var  frm_bank = document.forms[''form1''].elements;
var ind = frm_bank[''lst_bankname''].selectedIndex;
var  b_code = frm_bank[''lst_bankname''].options[ind].value;
var  bankname=frm_bank[''lst_bankname''].options[ind].text;

并将此值分配给下拉列表[主窗口]，使用了以下代码

and to assign this values to dropdown list[Main Window] the following code is used

window.opener.document.getElementById(''ctl00_ContentPlaceHolder1_ddl_bankcode'').options[0].value =b_code;
window.opener.document.getElementById(''ctl00_ContentPlaceHolder1_ddl_bankcode'').options[0].text =bankname;

并且以下代码用于调用下拉列表的SelectedIndexChanged事件

and the following code is used to call the SelectedIndexChanged event of dropdown list

window.opener.document.getElementById(''ctl00_ContentPlaceHolder1_ddl_bankcode'').onchange();

第一次可以正常使用.回发后无法使用.如果代码

It is working fine for first time.after post back it is not worked.if the code

window.opener.document.getElementById(''ctl00_ContentPlaceHolder1_ddl_bankcode'').onchange();

不使用它一直都很好w.但是我也想使用它.javascript被调用并且值bankname，b_code在第二次也是正确的，但是它没有设置为dropdownlist
它有什么问题，请帮助我解决它.

is not used it works fine all the timew.but i want to work it also.javascript is called and the values bankname,b_code are correct at second time also but it is not set to dropdownlist
What is the problem with it Please help me to solve it

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