We simply call it to your attention here.Įlements of security that might be affected include the following. Since these depend on security policies and settings outside of Salesforce, we can’t provide a recipe for specific changes. If your page is communicating with services besides Salesforce, the iframe boundary might also result in you needing to update your organization’s CORS settings, remote site settings, clickjack settings, or content security policy. We’ll cover some specifics in the next section. Of course, the flip side is that pages that do need to access the top-level browsing context, well, there’s some things that need to change. It’s an important part of the “just works” strategy for supporting Visualforce. This is why you don’t need to modify all of your Visualforce pages to adapt to the wildly different behind-the-scenes request environment of Lightning Experience. The advantage of running Visualforce pages inside an iframe is that, for pages that don’t need to access or change the top-level browsing context, running inside the iframe looks almost exactly like running as a page in Salesforce Classic. The iframe creates a boundary between the Visualforce page and its parent, the Lightning Experience application. An iframe creates an embedded browsing context that’s effectively a separate browser “window” from the main Lightning Experience browsing context. When your Visualforce page runs in Lightning Experience, it’s displayed inside an HTML iframe. JavaScript errors are harder to discover and diagnose, but there are some general rules we’ll cover in a bit. Most pages aren’t impacted by these security constraints, and those that are usually fail early and with clear error messages.
![visualforce iframe load html code visualforce iframe load html code](https://addyosmani.com/assets/images/iframe-lazyloading.png)
These are mostly security and JavaScript execution constraints. Other constraints are implicit, and enforced not by Lightning Experience but by the browser running it. They’re easier to understand and work with, and we’ll talk about them in a minute. Some of these constraints, such as the size of the frame in which your Visualforce page is displayed, are imposed directly by Lightning Experience. Lightning Experience is the parent context, and your Visualforce page is the child context. Your page needs to work within constraints that Lightning Experience imposes upon it. Here’s what’s important to know: Lightning Experience, or /lightning, is in charge of the request. You don’t have any control over it, and the implementation continues to evolve.
![visualforce iframe load html code visualforce iframe load html code](http://www.lemonce.com/images/blog/iframe-1.png)
And to be honest, the full details don’t matter. If you’ve worked with JavaScript frameworks like AngularJS or React, you’re reasonably familiar with the basics of how Lightning Experience, in the form of /lightning, starts up. The process by which a single-page application loads its resources-usually a static HTML shell and a lot of JavaScript-is both interesting and complex. The /lightning page loads, its code starts up, and that application code takes over the environment.
![visualforce iframe load html code visualforce iframe load html code](https://www.tutorialsart.com/wp-content/uploads/2021/02/if-nb.png)
The Lightning Experience container is a “single-page application,” or SPA, which is accessed at the /lightning URL. Let’s start with the outer container, the Lightning Experience application.