I have this very simple Javascript to write on a text area when the link is clicked:
<head>
<script language="javascript" type="text/javascript">
function addtext(text) {document.form.textarea.value = document.form.textarea.value+= text;}
</script>
</head>
<body>
<form action="" method="" name="form">
<textarea name="textarea" rows="" cols="" wrap="wrap"></textarea>
</form>
<a href="javascript:addtext('q');">q</a>
</body>
Now I want to up the ante.
What I want to do is have the form in another another window, and that when I click the link, I writes to a textarea in another window.
I'm not necessarily asking for the code because I realize this might be quite complicated.
The question would be where to start, because I haven´t got a clue!! (when I Google cross window or cross domain interaction with Javascript I don't really get anything useful).
So any help I can get, libraries, plugins or whatever might guide me in the right direction is more than appreciated.
Ok, I wrote you a sample you can check at http://jsfiddle.net/zzdAL/
$(document).ready(function()
{
popup = window.open("http://fiddle.jshell.net");
$("#input1").click(function() {
try {
popup.document.window.alert(1);
}
catch (e) { alert(e.message); }
});
}
);
It only runs an alert on the popup, but you can do whatever you want with the popup, assuming you have the necessary rights (needs to be the same domain I believe).
The most simple is to write a function in your popup and call it from the opener.
Probably it's too late, but here is an example of interaction: window interaction
Take a look to greasemonkey, it's an addon for your browser. You can choose on which page(s) the script will works.
来源：https://stackoverflow.com/questions/3950620/javascript-cross-window-interaction