![]() ![]() We can use the following line of code to add a Twitter Tweet button to a React app: Each of these elements is embedded into the website, which can range in complexity from a single line of code to an entire code section. Nowadays, you rarely see a web app that doesn’t have any content loaded from an external source.įor example, consider how many YouTube videos you find on webpages, Instagram posts you see outside of the app, Facebook comments sections on blogs, and even ads on webpages. Embedding pages from external sourcesįirst, we’ll learn how to embed pages from external sources, which is probably the more common use case of iframes. If the content is too heavy, it can slow down your webpage load time, so you should use iframes carefully. Keep in mind also that iframes use up additional memory. In an iframe, when a piece of content is embedded from an external source, it is completely controlled by the source instead of the website it is embedded in.įor this reason, it’s important to embed content only from a trusted source. In React, developers use iframes to create either a sandboxed component or an application that is isolated from its parent component. 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. Parameters are used in the url to pass extra information to the server, that may be used by the server to send a customised response back to the browser or use it otherwise.Ī parameter has a key and a value.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. What is iFrame ? An iFrame is a HTML element that allows to embed an external web page into your HTML page using src attribute (src stands for source). You can add elements, update or delete them using JavaScript since it has access to HTML DOM. What is JavaScript ? JavaScript is a programming language used to add behaviour and programmatically manipulate HTML pages. If you are comfortable with these technologies feel free to skip to next section Basics – Optionalįirst let’s cover some core basics used in this solution for people new to JavaScript and HTML. In this article, we will cover solution to help with programmatically passing parameters to an iframe using Vanilla JavaScript.
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