deletethis.net

The Chrome DevTools MCP is very useful!

The following are my notes on investigating a bug that a customer ran into back when I was on the WebView2 team.

Before working in Chromium I had been using our internal project's Azure DevOps (ADO) code search feature, and occassionally using Chromium Code Search or GitHub's code search.

I've made WatchBuildLog, a VS Code extension that watches a build log file and parses out build errors for the VS Code Problems tab.

I've had trouble getting Time Travel Debugging (TTD) working with debugging WPT from my chromium repo on Windows.

I've been writing (and using) a browser extension called OpenSourceIn that allows you to open the source code you're viewing in the browser into VS Code.

I'm happy to have finished my first Chromium bug that adds a WPT.

Previously, I made an Eleventy based GitHub project with GitHub automation to run Eleventy when checking in changes and hooked up a custom subdomain to the GitHub pages thinking I would start a new domain for the new blog.

I've made a sticky header that scroll animates all using CSS.

Previously, I made an Eleventy based GitHub project with GitHub automation to run Eleventy when checking in changes.

I wanted to replace my existing blog solution with a simple markdown setup.

SysInternals is in the Windows Store?

So much has to go right to get a 404.

JavaScript has a type Proxy that lets you intercept all interactions with an object - all property reads, writes, method calls, and so on.

JavaScript arrays are unbelievable.

Its rare to find devs anticipating Unicode control characters showing up in user input.

The scrollbars in UWP WebView and in Edge have different default behavior leading to many emails to my team.

There are two main differences in terms of security between a JavaScript UWP app and the Edge browser: Process Model A JavaScript UWP app has one process (technically not true with background tasks and other edge cases but ignoring that for the moment) th…

There's no perfect way to change the user agent string for the UWP WebView (x-ms-webview in HTML, Windows.UI.Xaml.Controls.WebView in XAML, and Windows.Web.UI.Interop.WebViewControl in Win32) but there are two imperfect methods folks end up using.

The GoBack and GoForward methods on the UWP WebView (x-ms-webview in HTML, Windows.UI.Xaml.Controls.WebView in XAML, and Windows.Web.UI.Interop.WebViewControl in Win32) act the same as the Back and Forward buttons in the Edge browser.

If you're developing with the new Windows.Web.UI.Interop.WebViewControl you may have noticed you cannot navigate to localhost HTTP servers.

Folks familiar with JavaScript UWP apps in Win10 have often been confused by what PWAs in Win10 actually are.

JSBrowser is a basic browser built as a Win10 JavaScript UWP app around the WebView HTML element.

JSBrowser is a basic browser built as a Win10 JavaScript UWP app around the WebView HTML element.

Win10 Changes In Win8.1 JavaScript UWP apps we supported multiple windows using MSApp DOM APIs.

The documentation for printing in JavaScript UWP apps is out of date as it all references MSApp.getHtmlPrintDocumentSource but that method has been replaced by MSApp.getHtmlPrintDocumentSourceAsync since WinPhone 8.1.

The x-ms-webview HTML element has the void addWebAllowedObject(string name, any value) method and the webview XAML element has the void AddWebAllowedObject(String name, Object value) method.

Previously I described Application Content URI Rules (ACUR) parsing and ACUR ordering.

JavaScript Microsoft Store apps have some details related to activation that are specific to JavaScript Store apps and that are poorly documented which I’ll describe here.

Application Content URI Rules (ACUR from now on) defines the bounds on the web that make up a Microsoft Store application.

Application Content URI Rules (ACUR from now on) defines the bounds of the web that make up the Microsoft Store application.

Since I had last posted about using Let's Encrypt with NearlyFreeSpeech, NFS has changed their process for setting TLS info.

Parsing WinMD files, the containers of WinRT API metadata, is relatively simple using the appropriate .NET reflection APIs.

I've put my WPAD Fiddler extension source and the installer on GitHub.

The other day I had to debug a JavaScript UWA that was failing when trying to use an undefined property.

I've made a PowerShell script to show system toast notifications with WinRT and PowerShell.

TL;DR: Web content in a JavaScript Windows Store app or WebView in a Windows Store app that has full access to WinRT also gets to use XHR unrestricted by cross origin checks.

You can call WinRT APIs from PowerShell.

You can use conditional breakpoints and debugging commands in windbg and cdb that together can amount to effectively patching a binary at runtime.

2016-Nov-5: Updated post on using Let's Encrypt with NearlyFreeSpeech.net I use NearlyFreeSpeech.net for my webhosting for my personal website and I've just finished setting up TLS via Let's Encrypt.

I've made a Unicode Clock in JavaScript.

I've put a new app on the Windows Store: Cloud Share.

Some time back while I was working on getting the Javascript Windows Store app platform running on Windows Phone (now available on the last Windows Phone release!)

The DOM location interface exposes the HTML document's URI parsed into its properties.

I just got a FitBit One from my wife.

PowerShell nicely includes ConvertTo-CSV and ConvertFrom-CSV which allow you to serialize and deserialize your PowerShell objects to and from CSV.

Occasionally I have need to run a set of unrelated promises in series, for instance an object dealing with a WinRT camera API that can only execute one async operation at a time, or an object handling postMessage message events and must resolve associated…

When writing a JavaScript library that uses postMessage and the message event, I must be considerate of other JS code that will be running along side my library.