returnValue运用方法

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: ------------------------------------------------------------------------------ //father.html <HTML> <HEAD> <META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0"> <TITLE></TITLE> <script language="javascript"> function showmodal(){ var ret = window.showModalDialog("child.htm",null,"dialogWidth:350px;dialogHeight:350px;help:no;status:no"); if (ret){alert('子窗口返回真!'); }else{ alert('子窗口返回假!'); } } </script> </HEAD> <BODY> <INPUT id=button1 type=button value=Button name=button1 onclick="showmodal();"> </BODY> </HTML> ------------------------------------------------------------------------------ //child.html <HTML> <HEAD> <META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0"> <TITLE></TITLE> <script language="javascript"> function trans(tag){ if (tag==0){ window.returnValue=false; } else{ window.returnValue =true; } window.close(); } </script> </HEAD> <BODY> <INPUT id=button1 type=button value="返回真" name=button1 onclick="trans(1)"> <INPUT id=button2 type=button value="返回假" name=button2 onclick="trans(0)"> </BODY> </HTML>
[时间：2008-12-01 14:30:45][点击:]

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