Check if iframe is visible

Check if iframe is visible

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jquery check if iframe is visible

Get Access. Log In. Web Dev. We help IT Professionals succeed at work. Last Modified: How do I execute this code so that it is only executed if the iframe is visible? Start Free Trial. View Solution Only. Distinguished Expert This award recognizes someone who has achieved high tech and professional accomplishments as an expert in a specific topic.

Commented: Unlock this solution and get a sample of our free trial. Author Commented: Hi, I think I have really confused myself this time! For some reason this isn't kicking in properly. I have drafted 3 files attached to illustrate the problem: parent.

I don't want it to execute.

Can you see what am I missing? Many Thanks as usual!By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information.

check if iframe is visible

Is it possible to toggle the visibility of an element, using the functions. It is the same as twernt's suggestionbut applied to a single element; and it matches the algorithm recommended in the jQuery FAQ. We use jQuery's is to check the selected element with another element, selector or any jQuery object. This method traverses along the DOM elements to find a match, which satisfies the passed parameter. It will return true if there is a match, otherwise return false.

You can use the hidden selector:. And the visible selector:. The above method does not consider the visibility of the parent. To consider the parent as well, you should use. The above method will consider div2 visible while :visible not. But the above might be useful in many cases, especially when you need to find if there is any error divs visible in the hidden parent because in such conditions :visible will not work.

None of these answers address what I understand to be the question, which is what I was searching for, "How do I handle items that have visibility: hidden? Neither :visible nor :hidden will handle this, as they are both looking for display per the documentation. As far as I could determine, there is no selector to handle CSS visibility. Here is how I resolved it standard jQuery selectors, there may be a more condensed syntax :.

From How do I determine the state of a toggled element? You can determine whether an element is collapsed or not by using the :visible and :hidden selectors. If you're simply acting on an element based on its visibility, you can just include :visible or :hidden in the selector expression. For example:. Often when checking if something is visible or not, you are going to go right ahead immediately and do something else with it. So if you have a selector and you want to perform some action on it only if is visible or hidden, you can use filter ":visible" or filter ":hidden" followed by chaining it with the action you want to take.

The :visible selector according to the jQuery documentation :.With tabbed browsing, there is a reasonable chance that any given webpage is in the background and thus not visible to the user. The Page Visibility API provides events you can watch for to know when a document becomes visible or hidden, as well as features to look at the current visibility state of the page. Notes: The Page Visibility API is especially useful for saving resources and improving performance by letting a page avoid performing unnecessary tasks when the document isn't visible.

When the user minimizes the window or switches to another tab, the API sends a visibilitychange event to let listeners know the state of the page has changed. You can detect the event and perform some actions or behave differently. For example, if your web app is playing a video, it can pause the video when the user puts the tab into the background, and resume playback when the user returns to the tab.

jquery check if iframe is visible

The user doesn't lose their place in the video, the video's soundtrack doesn't interfere with audio in the new foreground tab, and the user doesn't miss any of the video in the meantime. Visibility states of an represents a nested browsing context, embedding another HTML page into the current one. Developers have historically used imperfect proxies to detect this. For example, watching for blur and focus events on the window helps you know when your page is not the active page, but it does not tell you that your page is actually hidden to the user.

Note: While onblur and onfocus will tell you if the user switches windows, it doesn't necessarily mean it's hidden.

How to track iFrames with Google Tag Manager

Pages only become hidden when the user switches tabs or minimizes the browser window containing the tab. Separately from the Page Visibility API, user agents typically have a number of policies in place to mitigate the performance impact of background or hidden tabs. These may include:. Some processes are exempt from this throttling behavior. In these cases, you can use the Page Visibility API to reduce the tabs' performance impact while they're hidden.

check if iframe is visible

View live example video with sound. The example, which pauses the video when you switch to another tab and plays again when you return to its tab, was created with the following code:.

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check if iframe is visible

Page Visibility Second Edition. Edge Full support IE Full support Opera Full support For examples in each method described in this article, we'll be using the following HTML elements:. JavaScript has a hasAttribute function which can be used to test whether an attribute exists on an element or not. It returns a boolean true if a match is found and a boolean false when no match is found. For example:. In most cases, that may work for you, but in order to realize the problem with this method you need to know how it works.

In JavaScript the following values are considered falsy i. All other values non-falsy or truthy evaluate to boolean true. With that information we can conclude that since the return value of jQuery's attr is a string, a string boolean false, string 0, string null, and string NaN would be considered truthy values.

However, the problem arises if the attribute is an empty string or undefined i. For example, consider the following test cases:. Another popular technique is to use the double not notation for example!! It is same as directly evaluating the attr return value with the exception that it converts the value to a boolean true or false.

Check Visibility of Web Elements Using Various Types WebDriver Commands – Selenium Tutorial #14

The return values are the same as with the test cases above. That way, only elements that actually have that attribute would be selected. We can then simply use JavaScript's length property to check if there were any elements that matched like so:.

check if iframe is visible

Similarly, we could use the filter method to filter out elements that do not have the specified attribute among a set of selected elements. Hope you found this post useful. It was published 17 Sep, and was last revised 31 May, Please show your love and support by sharing this post. Daniyal Hamid 31 May, When we select an element with jQuery, a jQuery object is returned with a collection of elements that match the specified selector.

Therefore, to get the reference to the original HTML element we either use the get method or the array notation [] when using hasAttribute with jQuery where 0 is the index which points to the first element in the collection of elements found by jQuery selector match. For a jQuery selector that matches multiple HTML elements, we could iterate over each item and check for hasAttribute individually, for example by using the for loop or jQuery's jQuery. When an attribute does not exist on an element some browsers return it as undefined and some as boolean falsetherefore, we need to check for both values.

In ECMAScript 5 below, undefined can actually be overwritten, but this should not matter much if you're in control of the coding.I 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. Detect iframe loaded JavaScript.

I am using the following to populate an element document. When the iframe is loaded hide the animation, How do I detect when the iframe has loaded? 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? I now get this error on the unload event TypeError: null is not an object evaluating 'document.

Cheers for that it works. Onto the next phase. I would also like to know how to call my Hype javascript functions as well. That worked. Hype Support.I have a single-page site that's grouped into sections, and I'd like to have a hidden iframe element it's a youtube video load only when reaching the third section. I've tried a few things like 'lazy-load' and a few other jquery plugins but to no avail.

I'd appreciate any help I can get on this one! I just want to say that your site is starting to look really good, and I like where you're going with it. But I definitely don't like having to mute my speakers to visit a site. All you really have to do is add an audio element somewhere on the page that's visible for a basic audio controller that will allow visitors to pause and play the accompanying music. I think I might have figured out something nifty for ya.

This is very simple and uses a jQuery plugin called "isOnScreen. You can find the source of the plugin here at this link. After inserting that however you wish into your document I just put the source code into its own script but you can of course just download the js and link to itI replaced the waypoint code with something like this:. I want to recommend one more thing that I know will incredibly help and look really cool. Use something like fullpage. The reason why I'm saying that is that you'll be able to see from the plugin site itself how it looks and that each time you scroll, each div is given the full attention of the page.

This means that you won't have the music starting and stopping suddenly either. Every scroll brings you a full page which will help monumentally, I really believe. Hey Marcus, thanks for the positive feedback. The main conversion within the site is the music If the user doesn't want to take a moment of reflection or wouldn't like to continue listening, he can scroll back up or down away from the targeted element in the viewport.

That's my current vision. Ahhh I see!Clickjacking is an attack that tricks a user into clicking a webpage element which is invisible or disguised as another element. This can cause users to unwittingly download malware, visit malicious web pages, provide credentials or sensitive information, transfer money, or purchase products online. Typically, clickjacking is performed by displaying an invisible page or HTML element, inside an iframe, on top of the page the user sees.

The user believes they are clicking the visible page but in fact they are clicking an invisible element in the additional page transposed on top of it. This example illustrates that, in a clickjacking attack, the malicious action on the bank website, in this case cannot be traced back to the attacker because the user performed it while being legitimately signed into their own account.

X-Frame-Options allows content publishers to prevent their own content from being used in an invisible frame by attackers. The DENY option is the most secure, preventing any use of the current page in a frame. A basic way to test if your site is vulnerable to clickjacking is to create an HTML page and attempt to include a sensitive page from your website in an iframe. It is important to execute the test code on another web server, because this is the typical behavior in a clickjacking attack.

However, additional testing is needed to see which anti-clickjacking methods are used on the page, and whether they can be bypassed by attackers. You should also make sure your site resources are sending the proper X-Frame-Options HTTP headers, which would prevent some parts of your site from being framed in other pages or outside your domain.

Search Learning Center for. Clickjacking AppSecThreats. Learning Objectives After reading this article you will be able to: Understand the concept of clickjacking Learn about clickjacking via examples See how clickjacking mitigation works Understand the limitations of X-frame-options Learn about clickjacking solution with Imperva.

What is clickjacking Clickjacking is an attack that tricks a user into clicking a webpage element which is invisible or disguised as another element. Cursorjacking relies on vulnerabilities in Flash and the Firefox browser, which have now been fixed. Request Demo or learn more. Read next. From our blog.

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