I have a jsp page with frames
<%# include file="/includes/taglibs.jsp"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">
<html>
<head>
<title>Welcome</title>
<script type="text/javascript" src="/js/jquery-1.3.2.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(this).keydown(function(e) {
if(e.keyCode==27){
alert("escape pressed");
e.preventDefault();
}
});
}
);
</script>
</head>
<frameset rows="42,*" frameborder="0" framespacing="0" id="framest">
<frame src="/xyz/abc.html" scrolling="no" name="frame1"/>
<frame src="/xyz/init.html" scrolling="no" name="frame2"/>
</frameset>
</html>
I am trying to capture escape key press. But this doesn't seem to work. On each individual frame html if I write the same code of capturing , it works perfectly fine.
What changes should I make in the code above so that I would write the keydown code just once which enables me to capture keydown on anywhere on page on any frame.
Remember a frame is a completely new HTML page with a whole separate DOM, so jQuery doesn't include it in your bindings.
So you will need to bind to those documents also:
function keyDownHandler(e) {
if(e.keyCode==27){
alert("escape pressed");
e.preventDefault();
}
}
for (var id in window.parent.frames)
$(window.parent.frames[id].document).keydown(keyDownHandler);
$(document).keydown(keyDownHandler);
If the above doesn't work for you because of the id:
for (var i = 0; i < window.parent.frames.length; i ++) {
var frame = window.parent.frames[i].document;
frame.addEventListener("keydown",keyDownHandler, true);
}
If you want to reference all frames, from the top level
for (var i = 0; i < top.window.frames.length; i ++) {
var frame = top.window.frames[i].document;
frame.addEventListener("keydown",keyDownHandler, true);
}
You can also try this:
Write your code in .js file and include file in all frames. This way you have to write function only onces and you can call it in all frames.
Hope this hepls.
Related
How do I block my website from an iframe? For Instance YouTube cannot appear in a iframe it will say in place the owner of this website have blocked iframes. i am aware of the meta tag way like this
<meta http-equiv="X-Frame-Options" content="deny">
howerver that does not work for me, is there any other way, i would prefer to use javascript and html no apachi php ajex or others please. this is the youtube iframe that i wish to block just with my site. also without .htaccess
<!DOCTYPE html>
<html>
<head>
<title>YouTube</title>
</head>
<body>
<iframe width="50%" height="50%" src="http://www.youtube.com" >
</iframe>
</body>
My solution is to put in head or body tag
<script type="text/javascript">
function PreventFrame() {
try {
if (window.top !== window.self) {
document.write = "";
window.top.location = window.self.location;
setTimeout(function() {
document.body.innerHTML = '';
}, 0);
window.self.onload = function() {
document.body.innerHTML = '';
};
}
} catch (err) {}
}
PreventFrame();
</script>
I have created a JavaScript variable and when I click on the button it should increment by 1, but its not happening.
Here's manifest.json.
{
"name":"Facebook",
"version":"1.0",
"description":"My Facebook Profile",
"manifest_version":2,
"browser_action":{
"default_icon":"google-plus-red-128.png",
"default_popup":"hello.html"
}
}
Here is the code for the html page
<!DOCTYPE html>
<html>
<head>
<script>
var a=0;
function count()
{
a++;
document.getElementById("demo").innerHTML=a;
return a;
}
</script>
</head>
<body>
<p id="demo">=a</p>
<button type="button" onclick="count()">Count</button>
</body>
</html>
I want the extension to show me the value of a and increment it by one each time I click on the extension or the button
Your code is not working because it violates the default Content Security Policy. I've created a screencast of one minute to show what's wrong:
First, I've shown how to debug the problem. Right-click on your popup button, and click on "Inspect popup". After doing that, you will see the following error message:
Refused to execute inline script because it violates the following Content Security Policy directive: "script-src 'self' chrome-extension-resource:".
This explains that your code is not working, because it violates the default CSP: Inline JavaScript will not be executed. To solve the problem, you have to remove all inline JavaScript from your HTML file, and put it in a separate JS file.
The result is shown below:
hello.html (popup page)
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<p id="demo">=a</p>
<button type="button" id="do-count">Count</button>
<script src="popup.js"></script>
</body>
</html>
popup.js
var a=0;
function count() {
a++;
document.getElementById('demo').textContent = a;
}
document.getElementById('do-count').onclick = count;
Note that I've replaced innerHTML with textContent. Learn to use textContent instead of innerHTML when you intend to change the text. In this simple example it does not matter, but in more complex applications, it might become a security issue in the form of XSS.
Change your onclick:
onclick="count"
Or change your count function to something like this:
function count()
{
var demo = document.getElementById("demo");
return function() {
demo.innerHTML = ++a;
}
}
Here is a nice demo I put together:
Code (this assumes that you add id="the_button" to your button):
window.onload = function () {
var button = document.getElementById("the_button");
button.onclick = count();
function count() {
var a = 0;
var demo = document.getElementById("demo");
return function () {
demo.innerHTML = ++a;
}
}
}
Demo: http://jsfiddle.net/maniator/ck5Yz/
I would like to manipulate the HTML inside an iframe using jQuery.
I thought I'd be able to do this by setting the context of the jQuery function to be the document of the iframe, something like:
$(function(){ //document ready
$('some selector', frames['nameOfMyIframe'].document).doStuff()
});
However this doesn't seem to work. A bit of inspection shows me that the variables in frames['nameOfMyIframe'] are undefined unless I wait a while for the iframe to load. However, when the iframe loads the variables are not accessible (I get permission denied-type errors).
Does anyone know of a work-around to this?
If the <iframe> is from the same domain, the elements are easily accessible as
$("#iFrame").contents().find("#someDiv").removeClass("hidden");
Reference
I think what you are doing is subject to the same origin policy. This should be the reason why you are getting permission denied type errors.
You could use .contents() method of jQuery.
The .contents() method can also be used to get the content document of an iframe, if the iframe is on the same domain as the main page.
$(document).ready(function(){
$('#frameID').load(function(){
$('#frameID').contents().find('body').html('Hey, i`ve changed content of <body>! Yay!!!');
});
});
If the iframe src is from another domain you can still do it. You need to read the external page into PHP and echo it from your domain. Like this:
iframe_page.php
<?php
$URL = "http://external.com";
$domain = file_get_contents($URL);
echo $domain;
?>
Then something like this:
display_page.html
<html>
<head>
<title>Test</title>
</head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
cleanit = setInterval ( "cleaning()", 500 );
});
function cleaning(){
if($('#frametest').contents().find('.selector').html() == "somthing"){
clearInterval(cleanit);
$('#selector').contents().find('.Link').html('ideate tech');
}
}
</script>
<body>
<iframe name="frametest" id="frametest" src="http://yourdomain.com/iframe_page.php" ></iframe>
</body>
</html>
The above is an example of how to edit an external page through an iframe without the access denied etc...
Use
iframe.contentWindow.document
instead of
iframe.contentDocument
I find this way cleaner:
var $iframe = $("#iframeID").contents();
$iframe.find('selector');
You need to attach an event to an iframe's onload handler, and execute the js in there, so that you make sure the iframe has finished loading before accessing it.
$().ready(function () {
$("#iframeID").ready(function () { //The function below executes once the iframe has finished loading
$('some selector', frames['nameOfMyIframe'].document).doStuff();
});
};
The above will solve the 'not-yet-loaded' problem, but as regards the permissions, if you are loading a page in the iframe that is from a different domain, you won't be able to access it due to security restrictions.
You can use window.postMessage to call a function between page and his iframe (cross domain or not).
Documentation
page.html
<!DOCTYPE html>
<html>
<head>
<title>Page with an iframe</title>
<meta charset="UTF-8" />
<script src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
<script>
var Page = {
id:'page',
variable:'This is the page.'
};
$(window).on('message', function(e) {
var event = e.originalEvent;
if(window.console) {
console.log(event);
}
alert(event.origin + '\n' + event.data);
});
function iframeReady(iframe) {
if(iframe.contentWindow.postMessage) {
iframe.contentWindow.postMessage('Hello ' + Page.id, '*');
}
}
</script>
</head>
<body>
<h1>Page with an iframe</h1>
<iframe src="iframe.html" onload="iframeReady(this);"></iframe>
</body>
</html>
iframe.html
<!DOCTYPE html>
<html>
<head>
<title>iframe</title>
<meta charset="UTF-8" />
<script src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
<script>
var Page = {
id:'iframe',
variable:'The iframe.'
};
$(window).on('message', function(e) {
var event = e.originalEvent;
if(window.console) {
console.log(event);
}
alert(event.origin + '\n' + event.data);
});
$(window).on('load', function() {
if(window.parent.postMessage) {
window.parent.postMessage('Hello ' + Page.id, '*');
}
});
</script>
</head>
<body>
<h1>iframe</h1>
<p>It's the iframe.</p>
</body>
</html>
I prefer to use other variant for accessing.
From parent you can have a access to variable in child iframe.
$ is a variable too and you can receive access to its just call
window.iframe_id.$
For example, window.view.$('div').hide() - hide all divs in iframe with id 'view'
But, it doesn't work in FF. For better compatibility you should use
$('#iframe_id')[0].contentWindow.$
Have you tried the classic, waiting for the load to complete using jQuery's builtin ready function?
$(document).ready(function() {
$('some selector', frames['nameOfMyIframe'].document).doStuff()
} );
K
I create a sample code . Now you can easily understand from different domain you can't access
content of iframe .. Same domain we can access iframe content
I share you my code , Please run this code
check the console . I print image src at console. There are four iframe , two iframe coming from same domain & other two from other domain(third party) .You can see two image src( https://www.google.com/logos/doodles/2015/googles-new-logo-5078286822539264.3-hp2x.gif
and
https://www.google.com/logos/doodles/2015/arbor-day-2015-brazil-5154560611975168-hp2x.gif
)
at console and also can see two permission error(
2
Error: Permission denied to access property 'document'
...irstChild)},contents:function(a){return m.nodeName(a,"iframe")?a.contentDocument...
) which is coming from third party iframe.
<body id="page-top" data-spy="scroll" data-target=".navbar-fixed-top">
<p>iframe from same domain</p>
<iframe frameborder="0" scrolling="no" width="500" height="500"
src="iframe.html" name="imgbox" class="iView">
</iframe>
<p>iframe from same domain</p>
<iframe frameborder="0" scrolling="no" width="500" height="500"
src="iframe2.html" name="imgbox" class="iView1">
</iframe>
<p>iframe from different domain</p>
<iframe frameborder="0" scrolling="no" width="500" height="500"
src="https://www.google.com/logos/doodles/2015/googles-new-logo-5078286822539264.3-hp2x.gif" name="imgbox" class="iView2">
</iframe>
<p>iframe from different domain</p>
<iframe frameborder="0" scrolling="no" width="500" height="500"
src="http://d1rmo5dfr7fx8e.cloudfront.net/" name="imgbox" class="iView3">
</iframe>
<script type='text/javascript'>
$(document).ready(function(){
setTimeout(function(){
var src = $('.iView').contents().find(".shrinkToFit").attr('src');
console.log(src);
}, 2000);
setTimeout(function(){
var src = $('.iView1').contents().find(".shrinkToFit").attr('src');
console.log(src);
}, 3000);
setTimeout(function(){
var src = $('.iView2').contents().find(".shrinkToFit").attr('src');
console.log(src);
}, 3000);
setTimeout(function(){
var src = $('.iView3').contents().find("img").attr('src');
console.log(src);
}, 3000);
})
</script>
</body>
If the code below doesn't work
$("#iFrame").contents().find("#someDiv").removeClass("hidden");
Here is the reliable way to make it work:
$(document).ready(function(){
setTimeout(
function () {
$("#iFrame").contents().find("#someDiv").removeClass("hidden");
},
300
);
});
This way the script will run after 300 miliseconds, so it'll get enough time for iFrame to be loaded and then the code will come into action. At times the iFrame doesn't load and script tries to execute before it. 300ms can be tweaked to anything else as per your needs.
For even more robustness:
function getIframeWindow(iframe_object) {
var doc;
if (iframe_object.contentWindow) {
return iframe_object.contentWindow;
}
if (iframe_object.window) {
return iframe_object.window;
}
if (!doc && iframe_object.contentDocument) {
doc = iframe_object.contentDocument;
}
if (!doc && iframe_object.document) {
doc = iframe_object.document;
}
if (doc && doc.defaultView) {
return doc.defaultView;
}
if (doc && doc.parentWindow) {
return doc.parentWindow;
}
return undefined;
}
and
...
var frame_win = getIframeWindow( frames['nameOfMyIframe'] );
if (frame_win) {
$(frame_win.contentDocument || frame_win.document).find('some selector').doStuff();
...
}
...
I ended up here looking for getting the content of an iframe without jquery, so for anyone else looking for that, it is just this:
document.querySelector('iframe[name=iframename]').contentDocument
This solution works same as iFrame. I have created a PHP script that can get all the contents from the other website, and most important part is you can easily apply your custom jQuery to that external content. Please refer to the following script that can get all the contents from the other website and then you can apply your cusom jQuery/JS as well. This content can be used anywhere, inside any element or any page.
<div id='myframe'>
<?php
/*
Use below function to display final HTML inside this div
*/
//Display Frame
echo displayFrame();
?>
</div>
<?php
/*
Function to display frame from another domain
*/
function displayFrame()
{
$webUrl = 'http://[external-web-domain.com]/';
//Get HTML from the URL
$content = file_get_contents($webUrl);
//Add custom JS to returned HTML content
$customJS = "
<script>
/* Here I am writing a sample jQuery to hide the navigation menu
You can write your own jQuery for this content
*/
//Hide Navigation bar
jQuery(\".navbar.navbar-default\").hide();
</script>";
//Append Custom JS with HTML
$html = $content . $customJS;
//Return customized HTML
return $html;
}
How to, using JavaScript, resize frame inside frameset?
I've found jQuery slideUp (http://api.jquery.com/slideUp/) function very useful, however it's not possible to implement it to work with the frame.
To resize a frame, you'll have to change the rows/cols -attribute of the parent frameset-element.
Short example:
<html>
<head>
<script>
window.onload=function()
{
var frame=window.frames[0];
frame.document.open();
frame.document.write('<input type="button" \
onclick="parent.fx()" \
value="resize this frame to 150px height">');
frame.document.close();
}
var i=50;
function fx()
{
timer=setInterval(
function()
{
if(i>150)
{
clearTimeout(timer);
}
else {
document.getElementsByTagName('frameset')[0]
.setAttribute('rows',(i++)+',*');
}
}
,20)
}
</script>
</head>
<frameset rows="50,*">
<frame src="about:blank"/>
<frame src="about:blank"/>
</frameset>
</html>
I would like to manipulate the HTML inside an iframe using jQuery.
I thought I'd be able to do this by setting the context of the jQuery function to be the document of the iframe, something like:
$(function(){ //document ready
$('some selector', frames['nameOfMyIframe'].document).doStuff()
});
However this doesn't seem to work. A bit of inspection shows me that the variables in frames['nameOfMyIframe'] are undefined unless I wait a while for the iframe to load. However, when the iframe loads the variables are not accessible (I get permission denied-type errors).
Does anyone know of a work-around to this?
If the <iframe> is from the same domain, the elements are easily accessible as
$("#iFrame").contents().find("#someDiv").removeClass("hidden");
Reference
I think what you are doing is subject to the same origin policy. This should be the reason why you are getting permission denied type errors.
You could use .contents() method of jQuery.
The .contents() method can also be used to get the content document of an iframe, if the iframe is on the same domain as the main page.
$(document).ready(function(){
$('#frameID').load(function(){
$('#frameID').contents().find('body').html('Hey, i`ve changed content of <body>! Yay!!!');
});
});
If the iframe src is from another domain you can still do it. You need to read the external page into PHP and echo it from your domain. Like this:
iframe_page.php
<?php
$URL = "http://external.com";
$domain = file_get_contents($URL);
echo $domain;
?>
Then something like this:
display_page.html
<html>
<head>
<title>Test</title>
</head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
cleanit = setInterval ( "cleaning()", 500 );
});
function cleaning(){
if($('#frametest').contents().find('.selector').html() == "somthing"){
clearInterval(cleanit);
$('#selector').contents().find('.Link').html('ideate tech');
}
}
</script>
<body>
<iframe name="frametest" id="frametest" src="http://yourdomain.com/iframe_page.php" ></iframe>
</body>
</html>
The above is an example of how to edit an external page through an iframe without the access denied etc...
Use
iframe.contentWindow.document
instead of
iframe.contentDocument
I find this way cleaner:
var $iframe = $("#iframeID").contents();
$iframe.find('selector');
You need to attach an event to an iframe's onload handler, and execute the js in there, so that you make sure the iframe has finished loading before accessing it.
$().ready(function () {
$("#iframeID").ready(function () { //The function below executes once the iframe has finished loading
$('some selector', frames['nameOfMyIframe'].document).doStuff();
});
};
The above will solve the 'not-yet-loaded' problem, but as regards the permissions, if you are loading a page in the iframe that is from a different domain, you won't be able to access it due to security restrictions.
You can use window.postMessage to call a function between page and his iframe (cross domain or not).
Documentation
page.html
<!DOCTYPE html>
<html>
<head>
<title>Page with an iframe</title>
<meta charset="UTF-8" />
<script src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
<script>
var Page = {
id:'page',
variable:'This is the page.'
};
$(window).on('message', function(e) {
var event = e.originalEvent;
if(window.console) {
console.log(event);
}
alert(event.origin + '\n' + event.data);
});
function iframeReady(iframe) {
if(iframe.contentWindow.postMessage) {
iframe.contentWindow.postMessage('Hello ' + Page.id, '*');
}
}
</script>
</head>
<body>
<h1>Page with an iframe</h1>
<iframe src="iframe.html" onload="iframeReady(this);"></iframe>
</body>
</html>
iframe.html
<!DOCTYPE html>
<html>
<head>
<title>iframe</title>
<meta charset="UTF-8" />
<script src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
<script>
var Page = {
id:'iframe',
variable:'The iframe.'
};
$(window).on('message', function(e) {
var event = e.originalEvent;
if(window.console) {
console.log(event);
}
alert(event.origin + '\n' + event.data);
});
$(window).on('load', function() {
if(window.parent.postMessage) {
window.parent.postMessage('Hello ' + Page.id, '*');
}
});
</script>
</head>
<body>
<h1>iframe</h1>
<p>It's the iframe.</p>
</body>
</html>
I prefer to use other variant for accessing.
From parent you can have a access to variable in child iframe.
$ is a variable too and you can receive access to its just call
window.iframe_id.$
For example, window.view.$('div').hide() - hide all divs in iframe with id 'view'
But, it doesn't work in FF. For better compatibility you should use
$('#iframe_id')[0].contentWindow.$
Have you tried the classic, waiting for the load to complete using jQuery's builtin ready function?
$(document).ready(function() {
$('some selector', frames['nameOfMyIframe'].document).doStuff()
} );
K
I create a sample code . Now you can easily understand from different domain you can't access
content of iframe .. Same domain we can access iframe content
I share you my code , Please run this code
check the console . I print image src at console. There are four iframe , two iframe coming from same domain & other two from other domain(third party) .You can see two image src( https://www.google.com/logos/doodles/2015/googles-new-logo-5078286822539264.3-hp2x.gif
and
https://www.google.com/logos/doodles/2015/arbor-day-2015-brazil-5154560611975168-hp2x.gif
)
at console and also can see two permission error(
2
Error: Permission denied to access property 'document'
...irstChild)},contents:function(a){return m.nodeName(a,"iframe")?a.contentDocument...
) which is coming from third party iframe.
<body id="page-top" data-spy="scroll" data-target=".navbar-fixed-top">
<p>iframe from same domain</p>
<iframe frameborder="0" scrolling="no" width="500" height="500"
src="iframe.html" name="imgbox" class="iView">
</iframe>
<p>iframe from same domain</p>
<iframe frameborder="0" scrolling="no" width="500" height="500"
src="iframe2.html" name="imgbox" class="iView1">
</iframe>
<p>iframe from different domain</p>
<iframe frameborder="0" scrolling="no" width="500" height="500"
src="https://www.google.com/logos/doodles/2015/googles-new-logo-5078286822539264.3-hp2x.gif" name="imgbox" class="iView2">
</iframe>
<p>iframe from different domain</p>
<iframe frameborder="0" scrolling="no" width="500" height="500"
src="http://d1rmo5dfr7fx8e.cloudfront.net/" name="imgbox" class="iView3">
</iframe>
<script type='text/javascript'>
$(document).ready(function(){
setTimeout(function(){
var src = $('.iView').contents().find(".shrinkToFit").attr('src');
console.log(src);
}, 2000);
setTimeout(function(){
var src = $('.iView1').contents().find(".shrinkToFit").attr('src');
console.log(src);
}, 3000);
setTimeout(function(){
var src = $('.iView2').contents().find(".shrinkToFit").attr('src');
console.log(src);
}, 3000);
setTimeout(function(){
var src = $('.iView3').contents().find("img").attr('src');
console.log(src);
}, 3000);
})
</script>
</body>
If the code below doesn't work
$("#iFrame").contents().find("#someDiv").removeClass("hidden");
Here is the reliable way to make it work:
$(document).ready(function(){
setTimeout(
function () {
$("#iFrame").contents().find("#someDiv").removeClass("hidden");
},
300
);
});
This way the script will run after 300 miliseconds, so it'll get enough time for iFrame to be loaded and then the code will come into action. At times the iFrame doesn't load and script tries to execute before it. 300ms can be tweaked to anything else as per your needs.
For even more robustness:
function getIframeWindow(iframe_object) {
var doc;
if (iframe_object.contentWindow) {
return iframe_object.contentWindow;
}
if (iframe_object.window) {
return iframe_object.window;
}
if (!doc && iframe_object.contentDocument) {
doc = iframe_object.contentDocument;
}
if (!doc && iframe_object.document) {
doc = iframe_object.document;
}
if (doc && doc.defaultView) {
return doc.defaultView;
}
if (doc && doc.parentWindow) {
return doc.parentWindow;
}
return undefined;
}
and
...
var frame_win = getIframeWindow( frames['nameOfMyIframe'] );
if (frame_win) {
$(frame_win.contentDocument || frame_win.document).find('some selector').doStuff();
...
}
...
I ended up here looking for getting the content of an iframe without jquery, so for anyone else looking for that, it is just this:
document.querySelector('iframe[name=iframename]').contentDocument
This solution works same as iFrame. I have created a PHP script that can get all the contents from the other website, and most important part is you can easily apply your custom jQuery to that external content. Please refer to the following script that can get all the contents from the other website and then you can apply your cusom jQuery/JS as well. This content can be used anywhere, inside any element or any page.
<div id='myframe'>
<?php
/*
Use below function to display final HTML inside this div
*/
//Display Frame
echo displayFrame();
?>
</div>
<?php
/*
Function to display frame from another domain
*/
function displayFrame()
{
$webUrl = 'http://[external-web-domain.com]/';
//Get HTML from the URL
$content = file_get_contents($webUrl);
//Add custom JS to returned HTML content
$customJS = "
<script>
/* Here I am writing a sample jQuery to hide the navigation menu
You can write your own jQuery for this content
*/
//Hide Navigation bar
jQuery(\".navbar.navbar-default\").hide();
</script>";
//Append Custom JS with HTML
$html = $content . $customJS;
//Return customized HTML
return $html;
}