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The best case is that the new API will help us to improve the performance and ad blocking experience on Safari, and paves the way for an iOS ad blocker. So, we are nervously awaiting how powerful their block lists will be, most importantly when it comes to matching the document domain and request type, as well as regular expression matching of URLs and recursive exception rules. However, most of our filters aren’t as simple as the example above.
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With this new mechanism, we’d need to convert Adblock Plus filter lists to a block list like the one above.
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This mechanism is entirely different from the one used by Adblock Plus on any other platform (including current versions of Safari), where we can run arbitrary code on request, blocking requests depending on their URL and context. Those lists are not (yet) documented but the announcement includes an example: [ However, according to the announcements there are so called “block lists”, which are JSON files, that can be registered by the extension.
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So far very little is known about Content Blocking Extensions, available in Safari 9 and iOS 9. In short, either this new API will improve Adblock Plus performance on Safari or it will force us to rely upon an inferior blocking format that would essentially kill ad blocking on Safari. We appreciate and support Apple’s attempts to finally catch up on extensions, but those latest changes will create either the best possible landscape for Safari extensions, or the worst – especially for Adblock Plus. This is the first time since Safari 5.1 that new extension APIs have been added to Safari, so it was a nice surprise. But we still need to mimic the functionality that waits for a user’s input after execution, like the native alert(), confirm(), and prompt() methods.Adblock Plus and (a little) more Content blocking in Safari 9 and iOS 9: good news? Or the death knell of ad blocking on Safari? Īpple recently announced a new mechanism for Safari and iOS extensions to block content. Now we can show the element in all browsers. * If form elements exist, focus on that first */ * A target can be added (from the element invoking the dialog */ export default class Dialog, ttings, settings) These settings will be used for all dialogs, unless you overwrite them when invoking them (but more on that later). A dialog classįirst, we need a basic JavaScript Class with a settings object that will be merged with the default settings. If you’d like to see the demo right away, it’s here. Heck, while we’re at it, let’s add sound to the HTML dialog element - just like real system dialogs! It’s impossible to completely replace Javascript dialogs with identical functionality, but if we use the showModal() method of combined with a Promise that can either resolve (accept) or reject (cancel) - then we have something almost as good. With that big consideration in mind, what are alert(), confirm() and prompt() alternatives do we have to replace them? You may have already heard about the HTML element and that’s what I want to look at in this article, using it alongside a JavaScript class. First removal from cross-domain iframes and, word is, from the web platform entirely, although it also sounds like plans for that are on hold. Another big consideration: there has been movement toward their deprecation. So why don’t I - or really any other web developer - use them? Probably because they look like system errors that cannot be styled. These three JavaScripts methods work 99% of the time when I need any of these functionalities. It pauses code-execution., Plus, it waits for user input.We get automatic light and dark mode support right out of the box. What’s weird though is that you can’t move focus to the “accept” or “cancel” buttons in any browser using the Tab key. Pressing Tab will not reach any focusable elements on the main page, but in Firefox and Safari it does indeed move focus to the browser UI. It moves focus and allows the modal content to be read aloud. Press Enter to accept and Escape to cancel. As in, it will always be on top of the stack - even on top of that with z-index: 99999.
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Then it hit me: you get a lot of modal-related features for free with alert(), confirm(), and prompt() that often go overlooked: For instance: const deleteLocation = confirm('Delete location') While I was waiting for another developer to code the component, I used alert(), confirm() and prompt() in my code. I recently worked on a project with a lot of API calls and user feedback gathered with JavaScript dialogs. You know how there are JavaScript dialogs for alerting, confirming, and prompting user actions? Say you want to replace JavaScript dialogs with the new HTML dialog element.