本文介绍了一个简单的父窗体与子窗体之间的通信案例，通过JavaScript实现子窗体向父窗体传递数据的功能。具体展示了如何创建两个HTML页面，并在子窗体关闭时将值传递给父窗体。
1.新建两个页面 一个是 father.html,一个是child.html
[b]father.html代码如下：[/b]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>父窗体</title>
</head>
<body>
<form id="form1" name="form1" method="post" action="">
<label>
<input type="text" name="txt_Value" id="txt_Value" />
</label>
<label>
<input type="button" name="btn_ShowClose" id="btn_ShowClose" value="按钮" οnclick="OpenWindow('child.html
','child',650,450);" />
</label>
</form>
</body>
</html>
[b]另一个是子窗体 :child.html代码如下：[/b]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>子窗体</title>
</head>
<body>
<form id="form1" name="form1" method="post" action="">
<label>关闭
<input type="button" name="btn_Close" id="btn_Close" value="按钮" οnclick="CloseWind();"
/>
</label>
</form>
</body>
</html>
2.通过子窗体执行的父窗体的setValue(m_strValue)来执行赋值操作.
[b]father.html代码如下：[/b]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>父窗体</title>
<script language="javascript" type="text/javascript">
function OpenWindow(szUrl,szTitle,nWidth,nHeight){
return window.open(szUrl, szTitle, 'resizable=yes,menubar=no,scrollbars=yes,left=' + (window.screen.width-nWidth)/2 + ',top=' + (window.screen.height-nHeight)/2 + ',width=' + nWidth + ',height=' + nHeight); //弹出一个居中可控制大小的窗体
}
function setValue(strValue){
document.getElementById("txt_Value").value = strValue;
}
</script></head>
<body>
<form id="form1" name="form1" method="post" action="">
<label>
<input type="text" name="txt_Value" id="txt_Value" />
</label>
<label>
<input type="button" name="btn_ShowClose" id="btn_ShowClose" value="按钮" οnclick="OpenWindow('child.html
','child',650,450);" />
</label>
</form>
</body>
</html>
[b]另一个是子窗体 :child.html代码如下：[/b]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>子窗体</title>
<script language="javascript" type="text/javascript" >
function CloseWind(){
opener.setValue("子窗体传值到父窗体");
window.close();
}
</script></head>
<body>
<form id="form1" name="form1" method="post" action="">
<label>关闭
<input type="button" name="btn_Close" id="btn_Close" value="按钮" οnclick="CloseWind();"
/>
</label>
</form>
</body>
</html>
2.通过子窗体执行的父窗体的setValue(m_strValue)来执行赋值操作.
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