[beginer]Why this script failed to work?

devdoer

HI:

I paste my script below:

<html>
<head>
<script src="http://code.activestate.com/js/jquery-1.2.1.js"
type="text/javascript"></script>

<script language="javascript" type="text/javascript">
function onLoad() {
var frame1 = $("#frame1");
alert("1");
var innerDoc = (frame1.get(0).contentDocument) ?
frame1.get(0).contentDocument : frame1.get(0).contentWindow.document;
alert("2");
var b=innerDoc.body;
alert("3");
alert(innerDoc.body.scrollHeight);
}
</script>

</head>
<body>
<iframe id="frame1" src="http://www.baidu.com" width=100%
onload="onLoad()">
</body>
</html>

The script only alert "1" in IE and alert "2" in firefox. It seems
stop execute after then.

Does any guy know why?

Sep 28 '08 #1

Subscribe Post Reply

1668

webzhao

On Sep 28, 5:14*pm, devdoer <devdo...@gmail.comwrote:

HI:

I paste my script below:

<html>
* * <head>
* * * * <script src="http://code.activestate.com/js/jquery-1.2.1.js"
type="text/javascript"></script>

* * * * <script language="javascript" type="text/javascript">
* * * * * * function onLoad() {
* * * * * * * * var frame1 = $("#frame1");
* * * * * * * * alert("1");
* * * * * * * * var innerDoc = (frame1.get(0).contentDocument) ?
frame1.get(0).contentDocument : frame1.get(0).contentWindow.document;
* * * * * * * * alert("2");
* * * * * * * * var b=innerDoc.body;
* * * * * * * * alert("3");
* * * * * * * * alert(innerDoc.body.scrollHeight);
* * * * * * }
* * * * </script>

* * </head>
* * <body>
* * * * <iframe *id="frame1" src="http://www.baidu.com" width=100%
onload="onLoad()">
* * * * </body>
* * </html>

The script only alert "1" in IE and alert "2" in firefox. It seems
stop execute after then.

Does any guy know why?

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Sep 28 '08 #2

Stevo

devdoer wrote:

HI:

I paste my script below:

<html>
<head>
<script src="http://code.activestate.com/js/jquery-1.2.1.js"
type="text/javascript"></script>

<script language="javascript" type="text/javascript">
function onLoad() {
var frame1 = $("#frame1");

Why the # character in there? Maybe it's a prototype.js syntax thing, I
don't know.

alert("1");
var innerDoc = (frame1.get(0).contentDocument) ?

You're not checking first if frame1 != null, which it would be if that #
above was wrong. You're also trying to access the contentDocument of a
page in a different domain. This is actively blocked by the browsers for
security reasons.

frame1.get(0).contentDocument : frame1.get(0).contentWindow.document;
alert("2");
var b=innerDoc.body;
alert("3");
alert(innerDoc.body.scrollHeight);
}
</script>

</head>
<body>
<iframe id="frame1" src="http://www.baidu.com" width=100%
onload="onLoad()">
</body>
</html>

The script only alert "1" in IE and alert "2" in firefox. It seems
stop execute after then.

Does any guy know why?

Sep 28 '08 #3

devdoer

On Sep 28, 6:07*pm, Stevo <n...@mail.invalidwrote:

devdoer wrote:
HI:

I paste my script below:

<html>
* * <head>
* * * * <script src="http://code.activestate.com/js/jquery-1.2.1.js"
type="text/javascript"></script>

* * * * <script language="javascript" type="text/javascript">
* * * * * * function onLoad() {
* * * * * * * * var frame1 = $("#frame1");

Why the # character in there? Maybe it's a prototype.js syntax thing, I
don't know.

* * * * * * * * alert("1");
* * * * * * * * var innerDoc = (frame1.get(0).contentDocument) ?

You're not checking first if frame1 != null, which it would be if that #
above was wrong. You're also trying to access the contentDocument of a
page in a different domain. This is actively blocked by the browsers for
security reasons.

But by using firebug, I can view the innerDoc 's content and other
attributes in the debug window.

Sep 28 '08 #4

RobG

On Sep 28, 7:14*pm, devdoer <devdo...@gmail.comwrote:

HI:

I paste my script below:

<html>
* * <head>
* * * * <script src="http://code.activestate.com/js/jquery-1.2.1.js"
type="text/javascript"></script>

* * * * <script language="javascript" type="text/javascript">
* * * * * * function onLoad() {
* * * * * * * * var frame1 = $("#frame1");

That looks like something from jQuery, so ask in a jQuery forum.
--
Rob

Sep 28 '08 #5

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