Posted in Javascript onSeptember 25, 2009
如我们新建窗体FatherPage.htm:
XML-Code:
<script type="text/javascript"> function OpenChildWindow() { window.open('ChildPage.htm'); } </script> <input type="text" id="txtInput" /> <input type="button" value="OpenChild" onclick="OpenChildWindow()" />
然后在ChildPage.htm中即可通过window.opener来访问父窗体中的元素:
XML-Code:
<script type="text/javascript"> function SetValue() { window.opener.document.getElementById('txtInput').value =document.getElementById('txtInput').value; window.close(); } </script> <input type="text" id="txtInput" /> <input type="button" value="SetFather" onclick="SetValue()" />
其实在打开子窗体的同时,我们也可以对子窗体的元素进行赋值,因为window.open函数同样会返回一个子窗体的引用,因此FatherPage.htm可以修改为:
XML-Code:
<script type="text/javascript"> function OpenChildWindow() { var child = window.open('ChildPage.htm'); child.document.getElementById('txtInput').value =document.getElementById('txtInput').value; } </script> <input type="text" id="txtInput" /> <input type="button" value="OpenChild" onclick="OpenChildWindow()" />
通过判断子窗体的引用是否为空,我们还可以控制使其只能打开一个子窗体:
XML-Code:
<script type="text/javascript"> var child function OpenChildWindow() { if(!child) child = window.open('ChildPage.htm'); child.document.getElementById('txtInput').value =document.getElementById('txtInput').value; } </script> <input type="text" id="txtInput" /> <input type="button" value="OpenChild" onclick="OpenChildWindow()" />
光这样还不够,当关闭子窗体时还必须对父窗体的child变量进行清空,否则打开子窗体后再关闭就无法再重新打开了:
XML-Code:
<body onunload="Unload()"> <script type="text/javascript"> function SetValue() { window.opener.document.getElementById('txtInput').value =document.getElementById('txtInput').value; window.close(); } function Unload() { window.opener.child=null; } </script> <input type="text" id="txtInput" /> <input type="button" value="SetFather" onclick="SetValue()" /> </body>
Javascript 两个窗体之间传值实现代码
声明:登载此文出于传递更多信息之目的,并不意味着赞同其观点或证实其描述。
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