Although it may not be terribly common, there are times in which you may need to check if a page is in an iframe. Easy enough, right? So much so that you can run the code within the Chrome Developer Tools, Firebug, or whatever your tool of choice may be, and then see the result directly in the console.
Of course, this will also vary based on the grid, the CSS, and other factors that you have implemented such as the height of the primary content container.
January 21, at am. The main use for this is a frame-breaker. It can for example be used for frame busting preventing anyone to put your website in an iframe : if top! January 23, at am.Same deutz fahr deutschland gmbh
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There are few peculiarities though. If we have a script after the style, then that script must wait until the stylesheet loads:. The reason for this is that the script may want to get coordinates and other style-dependent properties of elements, like in the example above. Naturally, it has to wait for styles to load. For instance, if the page has a form with login and password, and the browser remembered the values, then on DOMContentLoaded it may try to autofill them if approved by the user.
The load event on the window object triggers when the whole page is loaded including styles, images and other resources.
This event is available via the onload property. The example below correctly shows image sizes, because window. When a visitor leaves the page, the unload event triggers on window. There exists a special navigator. It sends the data in background. The transition to another page is not delayed: the browser leaves the page, but still performs sendBeacon.
You can find more information in the chapter Fetch API.Bollettino ufficiale della regione puglia n. 166 del 04/12/2014
But we can use another event — onbeforeunload. If a visitor initiated navigation away from the page or tries to close the window, the beforeunload handler asks for additional confirmation. For historical reasons, returning a non-empty string also counts as canceling the event. The behavior was changed, because some webmasters abused this event handler by showing misleading and annoying messages.
There are cases when we are not sure whether the document is ready or not. So we can check document. The readystatechange event is an alternative mechanics of tracking the document loading state, it appeared long ago. Nowadays, it is rarely used. The working example is in the sandbox.
The numbers in square brackets denote the approximate time of when it happens. We want to make this open-source project available for people all around the world. Tutorial map. We must use addEventListener to catch it: document. Scripts that are generated dynamically with document. Leave now? Previous lesson Next lesson. Comments read this before commenting… If you have suggestions what to improve - please submit a GitHub issue or a pull request instead of commenting.
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I am writing an iframe based facebook app. Now I want to use the same html page to render the normal website as well as the canvas page within facebook. I want to know if I can determine whether the page has been loaded inside the iframe or directly in the browser?
Browsers can block access to window. IE bugs also take place. Here's the working code:. When in an iframe on the same origin as the parent, the window. Otherwise, if browsing in a top-level context, or if the parent and the child frame have different origins, it will evaluate to null. If the page that gets loaded, lets call it special. Now lets say that the special. Lets say instead of clicking on the original link like normal, and loading the special.
When that new tab loads with no parent frames at all! IE will enter an endless loop of page loading! The accepted answer didn't work for me inside the content script of a Firefox 6. The strange thing about this output is that it's always the same regardless whether the code is run inside an iframe or the top-level window.
On the other hand Google Chrome seems to execute my content script only once within the top-level window, so the above wouldn't work at all. Without iframes this printsin a top-level window containing one frame it printsand in the only iframe of a document it prints This allows my extension to determine in both browsers if there are any iframes present, and additionally in Firefox if it is run inside one of the iframes.
I'm not sure how this example works for older Web browsers but I use this for IE, Firefox and Chrome without and issue:. One way to defend against clickjacking is to include a "frame-breaker" script in each page that should not be framed.
The following methodology will prevent a webpage from being framed even in legacy browsers, that do not support the X-Frame-Options-Header. Since you are asking in the context of a facebook app, you might want to consider detecting this at the server when the initial request is made. Since you probably need to check and use this data anyway in your app, use it to determine the the appropriate context to render.
From this i running a script to load the IFrame and to track whether the IFrame gets loaded properly or not. How can i track this Oct 22 ' Post Reply. Share this Question. Use the onload event. Yeah that i thought and tried to do but failed Basically the IFrame is getting updated asynchronously by Ajax. Post the code that you're testing with. I am testing the code with site Orkut There is an IFrame and Iframe is getting loaded by asyn Ajax call.
All these are taking care of by site itself. How can i track the response status when IFrame gets loaded successfully Is it possible Oct 23 ' Is the site loaded into the iframe from the same domain? No no. Post your code or a link to a test page.Short plays for middle school
Can you get the response from the Ajax call? How did you use the onload event?Walnut cracking machine
I am not using onLoad event because page is loaded by Ajax Call. And one more thing do you have any Orkut Account only then i can do further communication with youI am using the following to populate an element. I am now using. I have used the following within the element:. I want to call an animation to hide the loading gif using a timeline so is there a way to call a Hype Timeline from the element. I tend to use global variables that store anonymous functions to use throughout my document and I store these in a Hype function I call on scene load.
Cheers Steve Warby. I see the unload function but as usually its a guessing game as to where to put it. Cheers Steve W. Error in cartLoaded: TypeError: null is not an object evaluating 'document. Cheers Steve Warby iframeTest. If so how do I approach this? DBear August 19,pm I now get this error on the unload event TypeError: null is not an object evaluating 'document. DBear August 20,am Cheers for that it works. Onto the next phase.
I have had to do this in cases where documents such as word docs and pdfs were being streamed to the iframe and found a solution that works pretty well. The key is handling the onreadystatechanged event on the iframe. First somewhere in your code startup I do it inline any where after the iframe add something like this to register the event handler:. I wanted to hide the waiting spinner div when the i frame content is fully loaded on IE, i tried literally every solution mentioned in Stackoverflow.
Com, but with nothing worked as i wanted. And that exactly what happened. So, i wrote this small script, and worked like magic:. I have a similar code in my projects that works fine. Adapting my code to your function, a solution could be the following:. Maybe you have an empty innerHTML because one or both causes : 1.
I think the load event is right. What is not right is the way you use to retreive the content from iframe content dom.
Add menu. First somewhere in your code startup I do it inline any where after the iframe add something like this to register the event handler: document. What you need is the html of the page loaded in the iframe not the html of the iframe object. I would retreive the content before removing the iframe. It waits for the dom to load fully the first time you open the page.
Since the iframe element is owned by the containing page, you never need to worry about cross-domain restrictions. An iframe loading local content can be monitored just as well as an iframe loading foreign content experiment. Example code:.
This works in all browsers except Internet Explorer even version 8! Pretty disappointing. It seemed that Internet Explorer was going to foil my day…again.
In my specific case, I was dealing with content from the same domain. The interesting part of this approach is that you have to assign the event handler after the iframe element has been added to the page. This approach works in Internet Explorer and Firefox for same-domain pages only. I had resigned myself to using one method of detecting an iframe loading for Internet Explorer and another for every other browser, so I continued on my task.
Next, I had to set document. When using different subdomains, setting document. For example, if I had to load an iframe page from www2. However, if I set document. A single line of code, ideally placed at the top of the page, is all it takes:.
This equalizes the domain difference and allows everything to work as if both pages were from the same domain. Or so I thought. A relative path automatically prepends the domain on which the containing page was loaded from www.
That means a comparison of wnczonline. Once the iframe page has been loaded, however, everything works fine.
But how do you know once the iframe page has been loaded?
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