![]() This is because s share their session history with that of their top-level window. The back button will instead take you to the previous page inside the the top-level window would remain as it is. Now, once you make a couple of navigations, try going back by using the browser's back button.Īt this point, you might expect the back button to take you to the previous page in the top-level window but that's NOT what will happen. As you do so, you'll notice all the navigations happening inside the, not its parent window. go to the courses page, or maybe our blog page). In the link above, try navigating our landing page inside the (for e.g. It's just a simple loading up our landing page. The containing webpage where the element exists is called the embedding webpage.Īnd this is it for the basic terminology used while discussing about iframes. So in that sense, we have parent windows, child windows, and top-level windows.Īn embeds a webpage into an existing webpage often called the embedded page. Sometimes these terms are also referred to with the word 'window'. The top-level browsing context is one without any parent, hence the 'top-level', and it's almost always the main browser tab/window. Similarly, C is called the child browsing context of P. a tab/window can contain an, which itself denotes a new browsing context.Ī browsing context P that contains another browsing context C is called the parent browsing context of C. A simple exampleīecause a browsing context has a separate allocation of its resources, it's a good idea to keep s (which create browsing contexts) to a minimum in order to conserve the memory of the underlying machine.īrowsing contexts can contain browsing contexts within them. ![]() ![]() , however, still remains an integral component of many modern-day websites. and were deprecated in HTML5 due to certain usability and accessbility issues, which we'll discuss later on in this chapter. And that's where the blog leverages the element.Īnyways, moving on, was introduced under the larger idea of 'frames', as a way to embed documents within documents, in HTML4, along with its friends and. In this case, the blog can simply embed a third-party's web application, meant to read code and produce its output in situ. It would be too early to explain all that technical jaron at this stage.Īs a simple example of an, one that you would've probably already witnessed before, suppose a blog has to embed a code snippet along with a program that can run that code (sometimes on another server) and show the response/output live, something like Codepen or JSFiddle. For example longdesc = "framedescription.The fact that certain things are easier with s will become much clearer to you once you become a complete developer, knowing how to develop custom video player, ad libraries, and interactive utility apps, using JavaScript and other web technologies. This attribute allows you to provide a link to another page containing a long description of the contents of the frame. For example scrolling = "no" means it should not have scroll bars. This takes values either "yes", "no" or "auto". This attribute controls the appearance of the scrollbars that appear on the frame. This attribute allows you to specify the height of the space between the top and bottom of the frame's borders and its contents. This attribute allows you to specify the width of the space between the left and right of the frame's borders and the frame's content. This attribute specifies whether or not the borders of that frame are shown it overrides the value given in the frameborder attribute on the tag if one is given, and this can take values either 1 (yes) or 0 (no). This is especially important when you want to create links in one frame that load pages into an another frame, in which case the second frame needs a name to identify itself as the target of the link. It is used to indicate which frame a document should be loaded into. ![]() This attribute allows you to give a name to a frame. For example, src = "/html/top_frame.htm" will load an HTML file available in html directory. This attribute is used to give the file name that should be loaded in the frame.
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