However, the tabs.executeScript APIs are not available in version 3. These APIs are available to use in both Manifest versions 2 and 3.
Similarly, the same can be done for insertCSS, where you can inject styling on a webpage, and the same for removeCSS where you can remove injected styling from a webpage. In the tabs.executeScript API, I can only specify one file, but in scripting.executeScript, I can specify multiple files.
#Apple safari 6 code
But let's say I have a lot more code and it would look much cleaner if I could contain it in multiple files. But with scripting, you can specify multiple IDs. Note that with the tabs API, you can only specify one ID. Then, if you'd like to select which frames of the webpage to inject the code, you can specify the frame IDs. This API will return an error if the tab ID isn't specified. In order to execute a script, you have to specify the ID of the tab you want to script to execute in. This property is used to specify where the script should run. And note that with scripting, there's a new property called target. This is a much more improved way of executing a script because you're not confined to writing code in a string. And like any other function, it can contain arguments that can be passed in. And with this API, I can only inject code that's contained in a string, by passing along the "code" property, But now, with the new scripting API, I can pass along a function object containing this code. In this code snippet, I'm using the tabs.executeScript API to change the background color of a webpage to blue. Let's take a look at how the code for the new scripting API differs from the tabs API. Most of the functionality of these methods remain the same, but there are some new, additional features that scripting provides, such as new ways to inject code on a webpage, more options for which frames on the page the code should be executed in, and the ability to decide which execution environment the code should run in. Another improvement in version 3 is that the APIs for executing JavaScript and styling on a web page have moved from the tabs API to the new scripting API. If you prefer to keep using background pages for your extension, you're more than welcome to do so, but they must be non-persistent. These pages are also compatible with other browsers that support Manifest version 3. These are event driven pages where you can register listeners using the addEventListener API. If you're a web developer, you're likely familiar with service workers. One of the key new features in Manifest version 3 is that your extension can use a service worker instead of a background page. For those of you who haven't, there's no need to worry, because we will continue to support extensions using Manifest version 2 in Safari. For those of who have already updated your extension to use version 3, your extension will now work in Safari 15.4 and onwards. It introduces performance and security improvements and consolidates popular extension APIs. Manifest version 3 is the next iteration of the web extension platform. Let's get started with Manifest version 3.
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And today, I'm going to highlight some of the exciting new features that we've implemented over the past year, such as a new Manifest version for extensions, updated APIs, and syncing extensions across multiple devices. Moving forward, our goal is to continue to implement new features and APIs so that you can deliver even better experiences for your users. Before we dive into today's presentation, I'd like to take a moment to thank all of you for submitting your iOS, iPadOS, and macOS extensions to the App Store. Today I'm very excited to be speaking to you all about what's new in Safari Web Extensions this year. ♪ ♪ Kiara Rose: Hi, my name is Kiara Rose, and I work as a Safari Extensions Engineer.
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