The Scenario
I'm developing the front-end (CSS only) of an Angular SPA.
I'm not especially familiar with Angular routing.
I'd like to add a standalone page containing Bootstrap components just for development purposes (yes, I know this means it won't be a single page application anymore). This way I have one unified view with all the components so I don't have to switch back and forth while working on the CSS. It also acts as documentation for the Bootstrap for the other devs to refer to.
What I've tried
I originally added a bootstrap.html page to the app folder, alongside the app's index.html This worked at first, but has now stopped working. What would be the best/standard way to achieve something like this?
Update: I've managed to fix some of the JS errors, so the page is up and running again. My question remains though: "is there a way of adding a standalone page that is considered standard/best practise, or is it literally just add a separate HTML page at the app root?"
If you use a target='_self' in your linking anchor tag, this should force a full page reload, and that will avoid the angular routing - which is where I expect your request is getting hijacked (by design).
e.g.
link
Answering your updated question
Not to my knowledge, since (as you correctly pointed out) this mixes the SPA design pattern.
Related
Plain React apps are called SPA because they have only one html page which is the index.html. But that is not the case for next.js. So can we call a next.js app a single page application?
Good question.
Normally we don't call an engine SPA or not. For instance, React can do SPA, but it can do non-SPA work as well. The same applies to the NextJS as well.
Just to follow your dictionary. NextJS by default is not SPA based due to its hybrid nature, because it publishes each page as a separate entry point for everything under /pages. Of course if you only have one page index.js, then technically it's a SPA again. I guess it depends on how you structure your pages.
Yes, we can call nextjs a SPA even if you create many pages, but to keep it as such you should use client side transitions (no <a> tag).
First of all, SPA = Single Page Application
I assume the question intend SPA vs MPA (Multi Page Application)
The answer is Nextjs can do both depending if you use next link
https://nextjs.org/docs/api-reference/next/link
That will perform a client side transition without reloading the page from the server, assuming your page is static of coure and does not use getServerSideProps(). You can check that by watching the Network in Chrome debug tools.
How that works ? On first page load, all pages get loaded in js inside the vdom and any page can get injected into your browser dom fromthe client js not from the server.
To give it an MPA behavior, you can also link a relative page with a simple html anchor tag <a>, that will reload the page from the server, as the a tag uses no js for that. What could be the advantage of that ? keeping code clean from next maybe, and if you mess the react vdom (which you shouldn't) you're sure to get a fresh page again. A disadvantage of that is that you loaded all content in js initialy anyway, so reloading with anchors is a waste of resources and load time.
Note using PWA (Progressive Web App) is also an option to optimise the user experience, and it is also supported by nextjs
see
https://nextjs.org/docs/faq
and
https://github.com/vercel/next.js/tree/canary/examples/progressive-web-app
Hello guys i am new to React Js i often hear and see posts regarding react is single page app but never understood what is SPA and many say that it doesn't reload the pages but i didn't understood why so could you guys please explain me with simple examples.
A Single Page Application is a web application or website that interacts with the web browser by dynamically rewriting the current web page with new data from the web server, instead of the default method of the browser loading entire new pages.
This means that the URL of your website will not change completely (page will not reload), instead it will keep getting content and rewriting the DOM with it instead of loading a new page.
The goal is faster transitions that make the website feel more like a native app
Example: Netflix
This is the dashboard, and when we click on any movie, it changes to /watch and the content is rewritten.
In Technical Terms:
When building your react-app, you can see that there is only one
App.js from where your entire web-app is loaded in fragments and
components. This behaviour of rendering components and pages on a single page and changing the DOM( is a single page behaviour and hence the name), instead of loading a new page with new content, this makes it feel like a single application.
As mentioned in Glossary of React Terms:
A single-page application is an application that loads a single HTML page and all the necessary assets (such as JavaScript and CSS) required for the application to run. Any interactions with the page or subsequent pages do not require a round trip to the server which means the page is not reloaded.
And about "Why is React Js called as Single Page Application":
Though you may build a single-page application in React, it is not a requirement. React can also be used for enhancing small parts of existing websites with additional interactivity. Code written in React can coexist peacefully with markup rendered on the server by something like PHP, or with other client-side libraries. In fact, this is exactly how React is being used at Facebook.
A single page application has one single page e.g. www.google.ch. It is exactly one HTML file (with all its required dependencies) loaded into the browser. You'd navigate between paragraphs only using hash-router, but never ever visit another page like www.google.ch/maps (that would then be www.google.ch/#maps, which references / -> index.html) (tho google may not be the best example, it is more about URIs).
ReactJS is an open source JS library for building UI and used for SPA, and it manages the views of web apps. Reactjs can help you to modify your data without reloading of a page. It is a popular library in the market trend because of its scalability & fast performance.
Single Page applications are different from multiple page apps that we see everywhere because the SPA doesn't move into new pages; instead, it will load the pages inline within the same page.
In traditional websites, when we go from one page to another, the whole site is loaded. e.g - if you go from "www.example.com/hi" to "www.example.com/hello" the whole website is reloaded. No matter how much portion of the website is really changed. Let's say, the website has "Sidebar, logo, menu" on both of its pages, then the full reload doesn't make any sense. This takes too much time and decreases the performance.
Single Page Applications, as the name suggests, have only one single page that is loaded the first time you open the website. After this, no matter where you click, it is not gonna refresh the website fully.
browser reload button
The loading icon of the browser doesn't load when we move from one page to another on SPA site, as it does on the traditional websites.
Cons- SPA sites are great for UI UX but they are not the best when it comes to Search Engine Optimisation, it creates problems with rankings.
Using AngularJS 1.5.8 and Django/Django REST Framework as the back-end.
At this points have two URLs (app/ for login and app/dashboard as the main content); would be great to just have app/.
login and dashboard I have as components; navbar and sidebar I have as directives.
Using ngRoute currently and somethings I am reading lead me to believe I should be using ui-router to accomplish this.
Just some basic things that came to mind.
My sidebar has several tools I am developing. I want the user to be able to click on them, and then have the content related to that tool load in the main content area without the page refreshing or the URL changing.
Some of what I have read suggests ui-router might be better for this purpose? I am not, sure as I am just learning AngularJS and still struggling with its concepts. Thus, I don't have any code to post that needs to be fixed. Primarily just trying to understand the concepts and technology I need to look into to accomplish this. Makes it hard to lookup results on Google and SO when you aren't even sure what the terminology and tech is that you should be looking for.
Not sure if ngRoute or ui-router should be used; whether the modules should be built as components or directives; if the content for each tool stays in its own HTML template; etc...
This is a somewhat broad question but what you are looking for is client-side routing. Both ngRoute and ui-router offer this functionality and in very similar ways except ui-router offers significant extensibility with nested routes and multiple named view containers.
My advice is to start with ngRoute and learn it's ins and outs and then switch to ui-router if you find you need this extra functionality.
Client-side routing can either be used with the hash-bang (#/) or using html5 mode you can use a base URL that would function visually like server-side routing.
Now you've got the terms to search at least so happy Googling!
I am currently working on a project using Django and Angular. I am trying to implement Django's Password-Reset app, which seems pretty easy to set up. I followed the instructions and I ran into a peculiar issue that is caused by Angular's routing. I am trying to link to a FormView using
Forgot password?
But it seems that Angular's routing keeps picking up the literal translation of the link
http://127.0.0.1:8000/%7B%%20url%20'password_reset_recover'%20%%7D
This of course causes a routing error to pop up.
Is there anyway I can link to this view without Angular interfering?
Looks like the problem is that Django is not parsing your URL tag in the template. Might want to look into that rather than into Angular
Could you check the a tag in your Developer tools and see what it says? Chances are that it says exactly what the URL is pointing to.i.e. /%7B%%20url%20'password_reset_recover'%20%%7D
Have you added password_reset_recover in your root urls.py?
I am creating a single page app (mobile/desktop) using AngularJS. Based on the limited knowledge I have of AngularJS, I think the routing for the apps/websites is based on urls and $location/$location.path directive is used. However, in mobile or desktop apps, there is no browser. So how does AngularJS routing work in this case if views need to be switched?
Thanks
If you are talking about an Angular application by itself, it will always need something to be interpreted by something. Angular is written in JavaScript which means it will have to be interpreted by something which understands JavaScript. I am using the word interpreted instead of compiled, because JavaScript is not a compiled language.
But then how does something that interprets JavaScript display it on my screen you ask? For this you'll need a bit of background information.
The DOM
This is where we got to the Document Object Model DOM. From W3c:
The Document Object Model is a platform- and language-neutral
interface that will allow programs and scripts to dynamically access
and update the content, structure and style of documents. The document
can be further processed and the results of that processing can be
incorporated back into the presented page. This is an overview of
DOM-related materials here at W3C and around the web.
To dumb the quote above down:
you have a document (web page) which is being displayed and the DOM allows you to change this document which is being displayed.
JavaScript Engine
The link between JavaScript and the DOM is provided by an Engine. Every browser uses a JavaScript Engine. For example Chrome uses the V8 JavaScript engine. From an introduction of V8:
JavaScript is most commonly used for client-side scripting in a
browser, being used to manipulate Document Object Model (DOM) objects
for example. The DOM is not, however, typically provided by the
JavaScript engine but instead by a browser. The same is true of
V8—Google Chrome provides the DOM. V8 does however provide all the
data types, operators, objects and functions specified in the ECMA
standard.
How does this translate to your question?
Everything that wants to display a JavaScript application, needs to have a JavaScript Engine and a DOM. This could be a browser like Chrome, but could also be any other application.
A simple explanation of what a router does, is change the DOM to display different "documents". So plainly said: any application, be it a mobile or desktop application, which has a DOM understands how to use Angular's routing system.
Outside the browser means only application you are speaking about?. angular is tied to HTML pages in general. So its a framework for managing(not exactly appropriate word) the html pages to make them into Single Page Applications so that browser does not need to reload the entire the web application on request of a single page, it helps to invoke the html pages into the main html pages, this makes the application not to reload the entire, but to make available requested pages. this is where the routing comes.
Angular will work just fine there. In fact there is an Ionic project that is based on top of angular. E.g. if you are using Cordova, then the app is rendered inside a browser (or at least with the browser engine). So as far as I know it will behave exactly the same way with the exception of user not being able to type in URL or click back/forward.
Moreover I build an application for browser where I do not user URL as much as possible. E.g. I transition only between states and don't have direct url's in my application at all. Of course I need to support to the extent that a user can type in the url, but the ui-router does that on it's own if you map routes properly. But it seems much more beneficial not to rely on the urls at all for SPA (for internal stuff as you still have the edit url as I said before).