Parent form gets iframe
window.iframeId
iframe gets the parent window
window.parent
parent.html
The code copy is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
function btnFn(){
window.subWin.test();
}
function get(name){
return document.getElementById(name);
}
</script>
</head>
<body>
<input id="name" type="text" value="222">
<input type="button" id="btn" value="click" onclick="btnFn();"><br/>
<br/><br/>
<iframe src="sub.html" id="subWin"
name="subWin" marginwidth="0"
marginheight="0" scrolling="Yes" frameborder="0" valign="middle"
resize="no" style="display: block;border:3px solid red;"></iframe>
</body>
</html>
sub.html
The code copy is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript" >
function test(){
alert(window.parent.get("name").value);//Result: 222
}
</script>
</head>
<body>
I'm the content of the form
</body>
</html>