Can i use iframe

But, to prevent the CSS of the current website from affecting the style of these templates, I figured out that using an iframe with the srcdoc attribute was the cleanest solution. But the thing with these editors is that you have to find a way to keep the focus and the selection when the user is clicking on all the buttons across the interface. Because an iframe offers an isolated environment, this means that the focus or the selection is never lost when you are clicking outside of it.

By using communication events between the iframe and the parent more on how to do so later in this article , I managed to design a powerful editor in a snap.

To this day, there are eight attributes we can use to customize the behavior or styling of an iframe. You may find more than the ones listed above, but keep in mind that they are not supported in HTML5 anymore: align , frameborder , longdesc , marginheight , marginwidth and scrolling.

Note : By default, the iframe element has a border around it. To remove it, you can use the style attribute to set the border CSS property to none. Because an iframe is a document, you can use most global event handlers. When you are initiating the iframe, two of them come in handy to improve the experience, like displaying a spinner or a specific message to assist the user:. You can listen to them with the onload and onerror attribute respectively:. It is quite easy to send messages between the parent and the iframe.

You have to use the postMessage function, which is documented here. Note : Keep in mind that you can end up in some tricky situations when you need to debug something as messages are fire-and-forget i. When you are using an iframe, you are mostly dealing with content coming from a third party over which you have no control. Thus, you are increasing the risk of having a potential vulnerability in your application or simply having to deal with a bad user experience like annoying video auto-play.

You have to use the sandbox and allow the attributes we discussed earlier. Keep in mind that a good rule of thumb is to always grant the minimum level of capability necessary to a resource to do its job. For instance, if your iframe only needs to submit forms and to open new modal windows, here is how you will configure the sandbox attribute:.

For a situation when the sandbox attribute is configured, and one feature is not working correctly within the resource, it might be because it lacks a specific flag. This means that the JavaScript inside the iframe will not be executed, and all the privileges listed above will be restricted like creating new windows or loading a plugin. The empty sandbox attribute is mostly using for static content but will drastically reduce the capability required for other resources to work properly.

This allow attribute is currently experimental and only supported by Chromium-based browsers. It lets you allow whitelist specific features like letting the iframe access to the accelerometer, the battery information, or the camera. There are more than 25 available flags, so I will not list them all here. You can browse them on the Mozilla Feature Policy Documentation. I summarized the most popular in the table below:. Thus, you should always think about placing a warning message as a fallback for those poor users.

How can you render the iframe like it is actually part of the parent document i. It is still experimental and poorly supported among browsers only Chromium-based understand it. I did not know much about this, so I had to dig a little. There are many speculations around this subject. Viewed 16k times. In safari the Iframe box is only displayed, but the content in that is not shown.

Please clarify why safari doesn't support it? Improve this question. Rich 5, 9 9 gold badges 35 35 silver badges 58 58 bronze badges. R Iyalarasi. R 41 1 1 gold badge 2 2 silver badges 7 7 bronze badges. Show us what you're doing. If possible try to make the smallest example page that you can that replicates the result and post it either directly in the question or host it somewhere like jsfiddle. But there are hundreds thousands?

To list them all will be like writing a novel. From the inside of a frame, a script can get a reference to its parent window with window. Script access to a frame's content is subject to the same-origin policy. Scripts cannot access most properties in other window objects if the script was loaded from a different origin, including scripts inside a frame accessing the frame's parent. Cross-origin communication can be achieved using Window.

The title's value should concisely describe the embedded content:. Note: When the embedded document has the same origin as the embedding page, it is strongly discouraged to use both allow-scripts and allow-same-origin , as that lets the embedded document remove the sandbox attribute — making it no more secure than not using the sandbox attribute at all.

Sandboxing is useless if the attacker can display content outside a sandboxed iframe — such as if the viewer opens the frame in a new tab. Navigation of the site in the iframe stops working. Reason 3. At there Webmasters Help Forum, Google clearly stated that iframes may cause problems for them : IFrames are sometimes used to display content on web pages. Content displayed via iFrames may not be indexed and available to appear in Google's search results. We recommend that you avoid the use of iFrames to display content.

If you do include iFrames, make sure to provide additional text-based links to the content they display, so that Googlebot can crawl and index this content. Conclusion You may be facing what seems like a small layout issue with your iframe tag today.

I strongly advise you stay away from using the iframe tag. About the author. He is a self-taught Microsoft Certified Professional.