![]() We’ll see that, with a few lines of code, we can create some powerful features in the browser. Let’s build a proof of concept - an extension that uses artificial intelligence (AI) and computer vision to help the blind analyze images on a web page. Don’t worry: Building one is simple and straightforward. So, if you’ve never built an extension before or don’t know how it works, have a quick look at those resources. Microsoft (also, see the great overview video “ Building Extensions for Microsoft Edge”).I won’t cover the basics of extension development because plenty of good resources are already available from each vendor: Note: We won’t cover Safari in this article because it doesn’t support the same extension model as others. Edge, Chrome, Firefox, Opera, Brave and Vivaldi), and provide some simple tips on how to get a unique code base for all of them, but also how to debug in each browser. I’ll explain how you can install this extension that supports the web extension model (i.e. Indeed, the Chrome extension model based on HTML, CSS and JavaScript is now available almost everywhere, and there is even a Browser Extension Community Group working on a standard. Beware, it's a pretty busted experience.In today’s article, we’ll create a JavaScript extension that works in all major modern browsers, using the very same code base. After showing the new menu, you can view page elements with Control+Alt+I or the console with Control+Alt+C.If you're using the last available Windows version from 2012: Edit > Preferences > Advanced > Show Develop menu in menu bar.You can also add a Web Inspector button to your toolbar by customizing your Safari Window.Or control-click anywhere in the Safari tab and choose "Inspect Element" from the menu. Select Show Web Inspector Option-Command-I in the Develop Menu.Enable the Develop menu in Advanced preferences: Safari > Preferences > Advanced > Show Develop menu, then choose Develop > Show Error Console.I don't have a Mac or Safari, so the best I could do to test this was download Safari 5 for Windows from 2012. That link is a pretty basic (nearly useless) overview - there's more detail in the Safari Developer Help docs. Or right-click and choose "View source" or "Inspect element" (possibly only after opening the DevTools at least once).Press F12 or Control+Shift+J or Control+Shift+I.Or right-click and choose "View source" or "Inspect element".The shortcuts seem to be the same as Chrome and Opera. it's more secure by default and they have this novel idea for rewarding good content. ![]() This is my preferred browser now that they have all of the annoying kinks worked out. You can also change the shortcuts if you'd like: The shortcuts seem to be the same as Chrome, at least by default. Or press Ctrl+Shift+K or Ctrl+Shift+C or Ctrl+Shift+I (Windows).Select "Web Console" from the Web Developer submenu in the Firefox menu (or Tools menu if you display the menu bar or are on Mac).To view the console (logged messages, run JavaScript), press Command+Option+J (Mac) or Control+Shift+J (Windows, Linux, Chrome OS).To view elements of the page (DOM/CSS), either right-click and select "Inspect" or press Command+Option+C (Mac) or Control+Shift+C (Windows, Linux, Chrome OS).I had to use them just the other day to figure out why a single post on this blog wasn't displaying the summary on the main page - an unexpected character was messing up some custom JavaScript code. Most people will never know their browser hides a great set of tools, mostly used by web developers, but which can be useful for anyone trying to figure out why their browser seems to be acting up.įinding out why a page is slow, when an addon is throwing errors, what's being requested or sent out - all possible in the dev console. ![]()
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