![]() ![]() ![]() If this isn't set, the element can't be placed into full screen mode. In Chrome 17 or later (and maybe earlier), this attribute can be set to true if the frame is allowed to be placed into full screen mode by calling its element.webkitRequestFullScreen() method. webkitallowfullscreen Use allowfullscreen instead. In Gecko 9.0 or later, this attribute can be set to true if the frame is allowed to be placed into full screen mode by calling its element.mozRequestFullScreen() method. mozallowfullscreen Use allowfullscreen instead. marginwidth HTML 4 only The amount of space in pixels between the frame's content and its left and right margins. marginheight HTML 4 only The amount of space in pixels between the frame's content and its top and bottom margins. Due to widespread misuse, this is not helpful for non-visual browsers. ![]() longdesc HTML 4 only A URI of a long description of the frame. height Indicates the height of the frame HTML5 in CSS pixels, or HTML 4.01 in pixels or as a percentage. The value 0 tells the browser not to draw a border between this frame and other frames. frameborder HTML 4 only The value 1 (the default) tells the browser to draw a border between this frame and every other frame. allowpaymentrequest This attribute can be set to true if the frame should be allowed to invoke the Payment Request API. allowfullscreen This attribute can be set to true if the frame is allowed to be placed into full screen mode by calling its Element.requestFullscreen() method. align Deprecated since HTML4.01, Obsolete since HTML5 The alignment of this element with respect to the surrounding context. This element includes the global attributes. None, both the starting and ending tag are mandatory.Īny element that accepts embedded content. Content categoriesįlow content, phrasing content, embedded content, interactive content, palpable content. The top-level browsing context (which has no parent) is typically the browser window. The browsing context that contains the embedded content is called the parent browsing context. Each browsing context has its own session history and active document. However, an can be used within a normal document body. In HTML 4.01, a document may contain a head and a body or a head and a frameset, but not both a body and a frameset. Mixing protocols will generate its own security errors.The HTML element represents a nested browsing context, effectively embedding another HTML page into the current page. But I don't think that is what is causing your issue.Īlso be aware that both your site and the src you're linking to needs to use the same protocol. I should also mention that Edge's tracking prevention is also triggering on this so that isn't good either. The workaround would be to configure CORS to allow that domain to access your site but you're opening yourself up for potential attack so be wary. Hence why you're getting the failed to read error as the iframe does not have access to the parent window because it is not on the same domain. This helps sandbox the contents and prevent malicious actions but it is not foolproof. Most browsers have limited the ability to access anything on the parent page within an iframe. If a malicious user injects content into your site then they would have the same access to the client as your app would which could expose sensitive data. This is the gist of why CORS is so important. For example, nothing would prevent a malicious user (or script) between you and a web server from injecting an iframe that has a source pointing to a completely different domain. iframes are a great way to inject malicious code into a site and every modern browser is purposefully starting to block iframe usefulness. ![]()
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