Normal Angular applications get loaded only when it loads the required main.js, vendor.js, pollyfills.js and runtime.js.As your main.js size increases initial loading time also increases.. Summary The ng serve development server and its live-reload function make it easy for you to see changes in your web app as you make them. Using the Angular-CLI to generate an Angular SPA is an excellent way to … It's not quite obvious, and in the past I've been doing this the hard wrong way, by building the app and then running it through another always on Web server (IIS). The HttpClient captures the errors and wraps it in the generic HttpErrorResponse, before passing it to our app. About Hitesh Jethva. I have no idea what caused this to happen in the first place. Turns out that was very useful for capturing the screen capture at the beginning of this post . string--serve-path-default-warning: Deprecated: No longer has an effect. Need SEO-friendly Angular applications? Angular application will reload if it detects any change in the files being watched. It's flicker-free, and it doesn't reload the entire document. If you're testing on your local network, make sure that your mobile device is on the same network segment as your development machine. After much experimentation, it looked to me like the port that the browser was set to to wasn't the same as the live update port visual studio was serving. But if you want to check out your application on the actual phone or other mobile device, the process can be painful. It has all the common tasks like live reload, typescript transpiling, minification, and more. The error property of the HttpErrorResponse contains the underlying errorobject. If the script is only used in a lazy loaded module, you should just move it to there so you also get the benefit of cohesion as well as getting the script lazy-loaded. By default this server is set up to run as a local Web server, but you can set it up quite easily to also serve IP traffic externally. Client side live reloading is one of the most compelling features of client side JavaScript development. You basically start the air play server in the application and then connect to it from the phone. "Blazor Dev Server with CSS live reloader" If you are developing Blazor WebAssembly standalone app (not ASP.NET Core hosted), there is a more easy way. Since our method returns a promise, Angular will delay the initialization until the promise is resolved. Successfully merging a pull request may close this issue. Adding this for others to use if they need it. You signed in with another tab or window. It appears that recompilation occurs, but the HTML is not updated in the browser. I'm using 5kPlayer, which among many other cool features can act as an Apple Air Play server. Note: opening the Angular Live Development Server at http://localhost:51362 will live reload, but the backend does not work. Before - with the build and deploy then test cycle - I would be more inclined to do what you describe, but with the ability to run on device with live reload it's so easy that there's little reason to not do it. Hi, I feel a bit silly it took me this long to realize I can get Live Reload to run on my phone. Now you can start deploying your first project with Angular. Create data.json file under angular-mock-data/mocks folder. you have successfully installed Angular on Ubuntu 20.04. The back end server may generate the error and send the error response. Live reloading is a feature in Angular. Please guide me to enable Live reload. Deleting the dist folder - as others have suggested - is not a good fix since it will be recreated every time you use ng build. I have installed the webpack but the live reload is not working , it is building the modules and caching it. All I say is, that you have to choose your tools carefully... Lazy-Load Angular Universal Applications. You can use this to bootstrap your Angular SPA from within .Net core application and host it within IIS. When I hit my base URL example.com then the … The problem is that by default the WebPack server is bound to localhost. As mentioned at the beginning, this approach should also work with other CLI's that use the WebPack Web server. Regardless, the workaround mentioned above does the trick, as long as there is a main.js in the dist-server directory. Install a simple server like http-server: npm install -g http-server Then, within your project folder, serve up the project inside the dist folder: http-server dist/diff-loading/ The additional parameters ensure that we can access the development web server from the outside and that changes made to the source code on the host are picked up by the Webpack development server running inside of the container. Finally you can also set the host in the angular.json configuration file: With this you can now simply run ng serve to get external access. In the lazy-loaded module's routing module, add a route for the component. Turns out - there's an easier way: It's quite easy set up the WebPack Web Server to externally expose an IP address, which would allow your phone to access the live reload server over the local network. AngularCliBuilder:Error: Unknown option: '--watch'. This just killed half a day of productivity for me, thank you for pointing this out. I have started this blog with Angular v2 and Universal and back in 2016 it was not easy getting it set up. Live reload no longer works after Angular 6 update. But for development testing it certainly is sufficient. When debugging, I see this message: string--serve-path: The pathname where the app will be served. Note that there is a similar setting under the profiles -> [PROJECT NAME] section but I don't think that makes a difference for this problem, My previous workaround was incorrect. With ionic serve, Live Reload just refers to reloading the browser when changes are made. It also provides additional context about the state of the HTTP layer when the error occurred. This can now be done using the onSameUrlNavigation configuration option as part of the built-in Angular router. Now you just need to see it in action. The syntax may be different so check the specific CLI documentation for host binding. Open the browser on http://localhost:4200/. Everybody who has used Angular CLI knows that it is a powerful tool which can take a front-end development job to a completely different level. One of the great feature of Angular is webpack hot reloading that deploys the change on live and saves your lot of time. The HTTP errors fall into two categories. It's a lot for sure. I am using server-side rendering. Code repo & live demo included. Load config file prior to app creation. I don't know how many times I've suffered with some less than optimal solution like you described before I finally got irritated enough and investigated if there was a better way only to find there was and I should have been doing it for longer. Several people asked what I was using to mirror the iOS phone screen on my machine. For typical dev scenarios running on localhost is perfectly reasonable. If the specified directory does not exist, then the Microsoft.Extensions.DependencyInjection.SpaStaticFilesExtensions.UseSpaStaticFiles(Microsoft.AspNetCore.Builder.IApplicationBuilder) middleware will not serve any static files. It is not only about angular, but also written in angular. That is what I did with this blog. All that wasted time building and explicitly navigating, when all along I could have been just putting the phone in always on mode and watch things change! Using just the default ng serve you generally use localhost:4200 to access the Web server: This is what the dev server is designed for and that of course works. Check you have the latest angular … In essence, the user has just created something, we wanted to redirect the user to the edit screen, with all the data loaded. Linux 4.4.0-31-generic node v6.2.2 npm v3.10.5 angular-cli: … The Live Server extension makes creating websites in Visual Studio Code much easier. Here is a list of changes required to get everything running smoothly. Angular and a number of other tools use the WebPack development server. We used another command of Angular CLI, which in full is ng generate service path/name. Universal with Angular v9 has improved developer experience a lot and implementing it is now just a matter of following clearly defined steps. @Jo - yes those tools are available but they don't usually render anything like what actually renders on the phone. In Angular you run the live reload server with: using the Angular CLI. That's why I believe this is a dotnet setup issue. I also had to add an env.IsProduction() guard around the configuration to serve static files in Configure() because that throws an error without the call to services.AddSpaStaticFiles(). (Note that the port 8080 serves the built app from the dist folder, we have the live reloading feature of Angular on port 4200 .) That seemed to force VS to sync up the live update angular port number with the port number pushed to the browser. Delete the dist folder, and try again. I'm using my every day iPhone and a burner Android device for testing and they render vastly different than what you see in those Chrome resized previews. It occurred first in one project, then another. This section introduces the basic procedure for configuring a lazy-loaded route.For a step-by-step example, see the step-by-step setupsection on this page. I was having the same problem but it wasn't due to the angular 6 upgrade. This is actually a good default as it ensures that there isn't an accidental security leak via external network access . I've deleted ClientApp/dist folder, Environment is already "Development" and facing the same issue. In other words, you get to see in realtime when users like a picture - interesting, right? Turns out it's not that hard, but there's a bit of configuration that's required to connect the phone and desktop machine properly. This creates a folder if not existing called services/ and place our service files there. Create a folder named js in the folder src/assets/ and create a new JavaScript file named custom.js. Not sure why this folder existence silently causes the (webpack)-dev-server module not to be imported by __webpack_require__ though... As to the why, because of this in Startup.cs maybe? Angular includes a token named APP_INITIALIZER that allows our app to execute code when the application is initialized. Thanks. I usually use Chrome's device simulation mode available in the DevTools where you can select various iPhone and Android device display dimensions. We also used --spec false to let the Angular CLI know we don’t need to generate test Rick's FoxPro This tutorial shows how to use the JavaScript API to load and save documents within an Angular application. Even though whatever is watching does not update the file when changes are detected, the changes do come through to the browser. So using the default is not going to let you connect to the dev server. Testing your application and the server-side rendered version of it is now available as one command. by Moshe Vilner. I have tried the --disable-host-check option, but it does not seem to get around the issues as websocket for live updates will not connect as it tries to use http://localhost:4200 . I implemented your suggestion with the following changes. Create a Standard Angular App Step 1. As for built-in support for Angular 6, that's being tracked separately at aspnet/Templating#515. Congratulations! The description of configuration.RootPath is: Gets or sets the path, relative to the application root, of the directory in which the physical files are located. Web Log, Using Angular's Live Reload Web Server to Refresh Pages on a Phone, Using 5kPlayer to mirror your iOS on Windows, Serve content and allow external IP Access, How to connect to the your server on the local network, Bonus: capture the phone output on your desktop screen, Build my Angular into the distribution folder. In this post I show how I use Browser Sync and `dotnet watch` in … Then, using the new Angular Schematic, we are going to configure the application as server-side rendering (SSR). It should not be re-generated. I'm working on an Angular app, as I often do and wanted to change the the route in the URL without reloading the application. And how do I enable hot module replacement? Note: opening the Angular Live Development Server at http://localhost:51362 will live reload, but the backend does not work. … Having this functionality - especially on the phone - is a huge time saver especially on a recent mobile first project I'm working on. Also be sure to remove the ItemsModule from the AppModule.For step-by-step instructions on lazy loading modules, continue with the following secti… It is now read-only. Angular (and really any of the major JavaScript UI frameworks that integrate with the WebPack Dev Server) provides a built-in Live Reload Web server that makes it quick and easy to see UI changes updated in the browser as soon as you make a change to your code, HTML or CSS content. It's very smooth and seems very reliable. Unfortunately you'll need to use an IP Address rather than a domain name so a local network URL like this works on your local WiFi network: Note that the WebPack Dev Server does not support host header resolution, so AFAIK you can't use a domain name like myapp.server.com even if that DNS name is mapped to the appropriate IP address. Microsoft.AspNetCore.SpaServices.Extensions/AngularCli/AngularCliBuilder.cs, https://stackoverflow.com/questions/50867385/development-server-hot-updates-not-working. Turns out - there's an easier way: It's quite easy set up the WebPack Web Server to externally expose an IP address, which would allow your phone to access the live reload server over the local network. To lazy load Angular modules, use loadchildren (instead of component) in your AppRoutingModule routesconfiguration as follows. This creates one using PowerShell: Alternately you can add it in the Firewall app: Accessing the application from your phone now should work via the server's IP address. TIP: Don’t create mock data files under /src/assets/ or /src/app/ folder. The reason for this is to avoid Angular from keeping a watch on data files. Perhaps there could be a switch, or something smarter can determine if it should be added or not? Laurie Atkinson, Premier Developer Senior Consultant, A few tweaks are necessary to take an Angular app and move it to IIS. If everything is configured fine we are able to see the fetched data from the server, it is "Hello from API!" The URL that the browser client (or live-reload client, if enabled) should use to connect to the development server. Do you know how to connect? This starts up … Live Reload. 23--servePathDefaultWarning=true|false Over 8 years of experience as a Linux system administrator. It appears that recompilation occurs, but the HTML is not updated in the browser. Well, maybe it is because you wanted to reuse your skills or just to learn angular itself. The text was updated successfully, but these errors were encountered: You might simply have an old ClientApp/dist folder, which contains files from before the upgrade. Fix startup by editing package.json to remove --extract-css from ng serve, resulting in: Open http://localhost:5000 and then modify any HTML, live reload will not trigger. Unfortunately for ASP.NET Core server side code and MVC apps there aren't any comparable easy solutions. Is there any other way to handle it ? To do this, we will be using Angular 5 and PusherAPI. For this, we have to extend the angular.json file: and the actual time. This repository has been archived by the owner. Turns out Angular has easy options via its ng serve can be set up to bind to a specific port. One of the common issue our angular app has is that clients has to do browser hard refresh when developers push any new changes. However, many prefer using Angular CLI to develop an Angular application due to its simplicity and power and as part of this post I’ll be focusing on hosting this in IIS. As mentioned localhost or 127.0.0.0 are local IP addresses, so rather than using those you can bind to: So to launch the Angular Dev server with external port access enabled you can use: Notice that the server is letting you know that you're exposing the server to the network and is warning that the server is not meant to be a hardened Web server and not secure for external access. You can also be more specific about the IP address: Voila now you can can access the server remotely! Live reloads no longer works after I updated a vanilla project to Angular 6 using instructions at https://update.angular.io/. ASP.Net Core provides a number of project templates out of the box, one of which is ASP.Net Core with Angular. "CSS live reloading" feature will be started works fine! If you're on Windows you'll likely also have to add a Firewall exception rule to enable remote access to the firewall. Live Reload can also be used with Capacitor and Cordova to provide the same experience on virtual and hardware devices, which eliminates the need for … While working on the Angular live project, we use a real-world API and there might be some delay before the data to display is returned from the server and in that case, we don’t want to display a blank component to the users when waiting for the data. In the app module, use this token to invoke the load method in our config service. 22--servePath=servePath: The pathname where the app will be served. What's not so obvious: How do you get the live reload functionality to also work on a phone by connecting to your development machine, in order to be able to preview and tweak the layout quickly and just as easily as in a desktop browser? I often use a wired connection for my laptop and the phone on the wireless subnet - these are different and can't directly see each other on my network. This works, but fails for websockets connections for live updates testing on mobile device. First using npm start means that the Angular CLI doesn’t need do be installed globally in the container image. When you get it all going you can happily work like this on a mobile device: In this post I'll walk you through what you need to know in order to set up the Angular Dev server to: Although I specifically discuss the Angular Dev Server in this post, most other frameworks like Vue and React also use the same WebPack Dev server, so you can use the concepts described here with those CLIs as well. Edit: If you aren't using SSL, maybe doing the same thing with the applicationURL setting under issExpress correct it for you. According to 2018 research by Google, 53% of mobile users leave a site that takes longer than three seconds to load. The best ways to connect to the server using Angular CLI. Or the client-side code may fail to generate the request and throw the error (ErrorEventobjects). localhost is the local loopback adapter or 127.0.0.0 which does not expose itself to the network - it's entirely internal and in fact doesn't even hit the network interface. Open http://localhost:5000 and then modify any HTML, live reload will not trigger. As of Angular 5.1 there is a supported technique for route reloading. But if you try to access the local IP address directly: you'll find remote access doesn't work with the default configuration. The server might rej… We are going to make an application that gives realtime feedback when a picture is liked. Granted that not everybody is running Angular 6 and up, this is how the host and port are set in the angular-cli.json file. Both the Vue and React CLIs also use the WebPack web server, so with perhaps slightly different syntax the same approach can be used, so this isn't Angular specific. This starts up the server locally. Use for a complex dev server setup, such as one with reverse proxies. My server logs have this: 2017/02/14 05:37:22 [warn] 680#680: conflictin I have a one-page angular 2 application that uses routing. I had a snoop around the code and line 53 of Microsoft.AspNetCore.SpaServices.Extensions/AngularCli/AngularCliBuilder.cs wants to add --watch as an argument. Making a change then takes some more time. https://stackoverflow.com/questions/50867385/development-server-hot-updates-not-working. Read this post to learn what is server-side rendering and how to use it on your Angular SPA using Universal. Loading the first-page quickly is a critical part of any web application. All we need to do is take care of few things, First, we need URL Rewrite Module installed in our application. It … Unless the script is necessary for the execution of Angular, you might want to load the script after the Angular app’s views have been initialized, to make the app load as fast as possible. In Angular you run the live reload server with: ng serve using the Angular CLI. AFAIK you have to use the IP Address. Even though domain names don't work, once you've manually typed in the IP, you're done - just leave it sitting and it'll do its own refreshing. Seems that the new Angular CLI isn't much happy about it. The URL that the browser client (or live-reload client, if enabled) should use to connect to the development server. Use for a complex dev server setup, such as one with reverse proxies. So maybe I'm not the only one who didn't think or even think about the Angular Dev server as a remote Live Reload server that can work for live reloading on a mobile device. They work in a pinch if you want to get a general idea what things look like, but if you need need to tweak layout and see what things like line and box wrappings look like there's no substitute for running on an actual device. Meh! Using Microsoft.DotNet.Web.Spa.ProjectTemplates::2.0.0.