![]() ![]() Therefore, neither the parent component’s CSS styling nor its JavaScript will have any effect on the iframe. When a resource is rendered in an iframe, it functions independently of the parent component where it is embedded. Let’s get started! Best practices for using iframes in React ![]() First, let’s cover some background information on how iframes work and how we should use them. In this tutorial, we’ll explore iframes in React by looking at these two different use cases. Developers also use iframes to isolate certain resources from the same webpage, for example, encapsulating components in iframes by rendering them. Using the tag, you can easily embed external content from other sources directly into your webpage. Short for inline frame, an iframe is essentially a frame within a frame. Some common examples that you may recognize from browsing the web include the share button from Twitter, the like button from Facebook, and the map display from Google Maps.Ī popular way to retrieve this type of data is with an iframe. When building webpages, developers often need to include resources from other webpages. You can customize it to your liking.Chiamaka Umeh Follow A frontend developer with a passion for designing highly-responsive user interfaces for JavaScript-based web and mobile apps using React and React Native. The partial template contains the regular doctype, html and head with some additional styles attached. Let’s modify the shortcodes/code-preview.html again: Īs including the whole boilerplate inside the srcdoc attribute wouldn’t be handy, we define an inline partial template and reference it in the srcdoc attribute. We will modify the code preview to apply the boilerplate to every instance and also add some reset styles on top of that. We can already achieve that by including the boilerplate in the code-preview-file fragments of language html It’s sometimes desirable to have them inside the iframe. While elements such as, aren’t necessary in HTML5, ![]() With shortcodes we can expect to define something similar to:įancy! Applying default styles to the content # We will focus on Hugo and native Go’s templating features, but this can be easily translated to other templating languages. If you are using a static site generator such as Hugo or Jekyll ![]() Getting rid of code duplication with templates # They’re transferable to other technologies, but expect to spend some time converting the ideas shown here. Warning: the rest of the article makes a heavy use of Hugo’s features. Or you might continue reading to get a full solution with language-based highlighting, and nice styles. You can stop here and experiment with the idea yourself, This proves the feasibility to build code previews using iframes. The main one is that you need to duplicate the code. The preview looks okay for now, but we start to see some drawbacks. Hello world!The following example shows what we will achieve. We will build a simple code preview with javascript support and code listings. Building a simple code preview # What we will build # It will be simple, inline, lightweight, durable and secure. If you don’t need all the fancy features this writeup will guide you through building a local code preview that works with your static site generator. It’s a good idea to think twice before relying on any third-parties if your or your company’s website is at stake. There are of course bigger and lesser offenders. □ companies behind them might go bankrupt and disappear along with your code previews.□ welcome you with a huge cookie prompt,.The url points to provider’s domain with no integrity attribute to check if the code hasn’t been tampered with 1. □ make you add a tag to embed the preview.Potential drawbacks of embedding third-party playgrounds #Įmbedding third-party playgrounds might be undesirable as some: Using some of them might come with downsides or even serious consequences. They’re almost effortless to use, support frameworks, transpilers, preprocessors and other tooling that have evolved in the Javascript community over the years. Names such as CodePen, JSFiddle, JS Bin, or Plunker may ring a bell to you. Over the years a plethora of embeddable code playgrounds were created. Oftentimes their writings include code examples with previews. Many front-end developers and software companies blog about their trade. ![]()
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