window.returnValue和showModalDialog实现弹出有模式窗体
returnValue是javascript中html的window对象的属性,目的是返回窗口值,当用window.showModalDialog函数打开一个IE的模式窗口(模式窗口知道吧,就是打开后不能操作父窗口,只能等模式窗口关闭时才能操作)时,用于返回窗口的值,下面举个例子:
1、parent.html
<html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title></title> <script type="text/javascript"> function openNewWeb() { var winValue = window.showModalDialog("WebForm1.aspx", null, "dialogHeight=200px,dialogWidth=200px,center=1"); document.getElementById("result").innerText = winValue; } </script></head><body> <form id="form1" runat="server"> <input id="Button1" type="button" value="button" onclick="openNewWeb()" /> <div id="result"> </div> </form></body></html> <html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title></title> <script type="text/javascript"> function returnResult() { window.returnValue = document.getElementById("txtUserName").value; window.close(); } </script></head><body> <form id="form1" runat="server"> <input id="txtUserName" type="text" /> <input id="btn" type="button" value="button34" onclick="returnResult()" /> </form></body></html>