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从头开始构建全栈 Web 应用程序时,可能很难理解如何以最有效的方式组织代码。如果您曾经使用过 Netflix 或 Prime Videos 等渐进式 Web 应用程序,那么您肯定知道它们的简单界面是如何被复杂的功能所包裹并由其强大的后端赋予的。
在开发像 Netflix 这样的 Web 应用程序时,您的数据库应该做一件事,您的路由系统应该做另一件事,而您的业务逻辑应该同时处理应用程序的某些方面——但是这一切是如何结合在一起的呢?
因此,简而言之,开发 Web 应用程序就是要创建一个漂亮的前端,让您的用户与应用程序保持互动。第二件事是开发一个强大的后端,使您的应用程序运行顺畅。
在本文中,我们将了解如何使用 React 和 Node 从头开始构建整个 Web 应用程序。Js — JavaScript 中的两个强大工具。但在你开始阅读这篇博客之前,这里有几个问题一直萦绕在你的脑海中:
让我们深入挖掘每个点的细节......
为什么 React 和 Node.js 是开发前端和后端的热门选择?
结论: JavaScript 库 React,通常用于前端,可以创建有吸引力的用户界面。相比之下,经常在服务器上使用的 Node.js 可以创建可扩展的应用程序。将 React 和 Node.js 结合起来对于构建全栈 Web 应用程序的开发人员来说将是非常有益的。
React 和 Node.Js:了解它的基线、优点和用例
ReactJS 是最流行的前端 JavaScript 库之一,它使开发人员能够通过创建可重用的 UI 元素来构建具有数据驱动的动态视图的大型 Web 应用程序。此外,它还具有跨多个设备的流畅响应和功能。
根据 Statista 的说法,React.js 是最流行但使用最广泛的 Web 框架之一,它允许开发人员设计具有高度说服力和可扩展性的 Web 应用程序,而无需了解复杂的框架或编程语言。由于 React.js 受到 WhatsApp、Instagram、Netflix、Airbnb 等的信任。
ReactJS 的主要亮点
React.js 的主要特点
React.js 的用例
为了在 Web 应用程序开发中全面使用 React.js,值得聘请为领先的 React Web 开发公司工作的 React 开发人员。利用使用 React 开发应用程序的专业知识和经验,他们可以帮助您创建成功的 Web 应用程序。
Node.js 是使用 Google 的 V8 JavaScript 引擎创建的。它是一种开源编程语言,可以在多个平台上运行并显着减少开发时间。在 Node.js 的帮助下使用 JS 语言和模块时无需重复。
“据统计,在美国超过 63,000 个被检查的网站中,有超过 37,000 个网站在 Node.js 上运行。”
如果您想知道为什么 Node.js 被广泛用于 Web 应用程序的后端开发,以及为什么您应该聘请 Node 应用程序开发人员进行应用程序开发?好吧,在您相信这些数据之前,我们在这里向您描述 Node.js 的正当理由和优势:
Node.Js 的优势
Node.Js 的特点
Node.Js 的用例
Node.js 是最强大的 JavaScript 库之一,可以帮助您构建强大的后端。您可以在优秀的 Node.js Web 开发公司聘请 Node.js 开发人员来利用 Node.js 的关键特性和功能。
这是正确的。Node.js 有助于创建可扩展且快速的后端 RESTful API。另一方面,React 是一个产生交互式用户界面的前端库。使用这两种工具,您可以轻松创建复杂且可扩展的 Web 应用程序。因此,使用 React.js 和 Node.js 进行全栈 Web 应用程序开发是一种致命的组合。
使用 NPM(节点包管理器),您可以使用命令行界面 (CLI) 安装任何包。此外,Node 使用 Webpack 和其他模块从 React 应用程序创建一个易于编译的单个文件。
如果你喜欢 Node 和 React.js,请举手!
通过结合 React 和 Node JS 集成的 Web 开发更高效,更节省时间。它还允许企业主处理其业务中其他更重要的部分。
让我们看看您可能想要使用全栈 Web 开发的原因。
在构建复杂项目时,可扩展性是企业最紧迫的问题之一。通过聘请应用程序开发人员将 Node.js 和 React 一起使用时,他们可以构建可在各种设备上运行的交互式和大型数据驱动的 Web 应用程序。
MERN 堆栈由 MongoDB、Express、React 和 Node.js 组成。没有更好的组合可以为网站提供其独特的维度。MERN 堆栈与 Node.js 和 React.js 一起使用,因此可以结合使用 Node 和 React 进行 Web 应用程序开发。
如果您正在构建流数据应用程序或处理实时数据,Node.js 是一个不错的选择。这种类型的应用程序需要持续的服务器连接,Node.js 为您的应用程序提供持续支持。
将 React 与 Node 相结合可以产生高投资回报并为您节省金钱和时间,因为这些技术为构建快速、有效且易于维护的网站提供了理想平台。
您是否正在寻找具有异步数据加载的单页应用程序?如果是这样,使用 Node 后端的 React 是不错的选择,因为它使您能够构建带有回调函数的轻量级后端模型。
使用 Node 和 React,开发人员不必学习 Python 或 Ruby 等各种复杂的语言。他们可以只将 Node 用于开发的服务器端,而将 React 用于前端。除了节省资源、金钱和时间之外,这种回收还减少了浪费。
Node with React 为前端和后端提供了 JavaScript,这为创建网站和 Web 应用程序提供了更多的自由和灵活性。开发人员可以在整个应用程序开发过程中使用 JavaScript 作为单一语言。
简而言之:如果您决定使用 Node.js 和 React 来构建 Web 应用程序,您应该雇佣 Node.js 开发人员以及 React 开发人员。通过这种方式,您将有效地使用这两种技术,从而为您的业务构建出色的 Web 应用程序。
为了在当今竞争激烈的市场中生存,企业必须瞄准他们的客户并为他们提供能够提供出色用户体验的解决方案。幸运的是,React with Node.js 提供了一个平台,可让您快速构建强大的 Web 应用程序并在多种设备上保持高水平的性能。
对于那些希望构建可以处理大量数据的现代响应式 Web 应用程序的人来说,Node.js 和 React 是不错的选择。为什么不试试呢?
React 设计模型的简单性允许创建可重用的组件,而 Node.js 的事件驱动架构使得以更快的速度处理大量流量成为可能。
总而言之,选择致命的组合来开发全栈 Web 应用程序对于企业来说将是一个值得的决定。他们可以使用这种 Node.js 和 React 组合轻松节省时间和金钱,并能够为他们的业务增加竞争优势。
在这篇博客的最后,可以公平地说这两种技术可以很好地协同工作。Node.js 是一个服务器端平台,以高效的速度提供数据处理,可用于构建用 JavaScript 编写的 Web 服务器。
React 是一个前端框架,可帮助开发人员使用 Javascript 从组件创建接口。通过聘请 Web 应用开发人员,您可以无缝组合这些 JS 库来创建强大的网站。
这些框架的强大功能可以帮助您构建应用程序,而无需使用麻烦且耗时的其他框架。因此,如果您最终对这个想法感到方便并正在寻找一个专家级的开发人员团队,那么您可以在下面进行查询!
1598839687
If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?
In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.
Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.
React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.
Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.
Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.
The popularity of React Native comes from its advantages. Some of its advantages are as follows:
Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.
React Native is very close to native. Consider the following aspects as described on the React Native website:
Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.
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1632537859
Not babashka. Node.js babashka!?
Ad-hoc CLJS scripting on Node.js.
Experimental. Please report issues here.
Nbb's main goal is to make it easy to get started with ad hoc CLJS scripting on Node.js.
Additional goals and features are:
Nbb requires Node.js v12 or newer.
CLJS code is evaluated through SCI, the same interpreter that powers babashka. Because SCI works with advanced compilation, the bundle size, especially when combined with other dependencies, is smaller than what you get with self-hosted CLJS. That makes startup faster. The trade-off is that execution is less performant and that only a subset of CLJS is available (e.g. no deftype, yet).
Install nbb
from NPM:
$ npm install nbb -g
Omit -g
for a local install.
Try out an expression:
$ nbb -e '(+ 1 2 3)'
6
And then install some other NPM libraries to use in the script. E.g.:
$ npm install csv-parse shelljs zx
Create a script which uses the NPM libraries:
(ns script
(:require ["csv-parse/lib/sync$default" :as csv-parse]
["fs" :as fs]
["path" :as path]
["shelljs$default" :as sh]
["term-size$default" :as term-size]
["zx$default" :as zx]
["zx$fs" :as zxfs]
[nbb.core :refer [*file*]]))
(prn (path/resolve "."))
(prn (term-size))
(println (count (str (fs/readFileSync *file*))))
(prn (sh/ls "."))
(prn (csv-parse "foo,bar"))
(prn (zxfs/existsSync *file*))
(zx/$ #js ["ls"])
Call the script:
$ nbb script.cljs
"/private/tmp/test-script"
#js {:columns 216, :rows 47}
510
#js ["node_modules" "package-lock.json" "package.json" "script.cljs"]
#js [#js ["foo" "bar"]]
true
$ ls
node_modules
package-lock.json
package.json
script.cljs
Nbb has first class support for macros: you can define them right inside your .cljs
file, like you are used to from JVM Clojure. Consider the plet
macro to make working with promises more palatable:
(defmacro plet
[bindings & body]
(let [binding-pairs (reverse (partition 2 bindings))
body (cons 'do body)]
(reduce (fn [body [sym expr]]
(let [expr (list '.resolve 'js/Promise expr)]
(list '.then expr (list 'clojure.core/fn (vector sym)
body))))
body
binding-pairs)))
Using this macro we can look async code more like sync code. Consider this puppeteer example:
(-> (.launch puppeteer)
(.then (fn [browser]
(-> (.newPage browser)
(.then (fn [page]
(-> (.goto page "https://clojure.org")
(.then #(.screenshot page #js{:path "screenshot.png"}))
(.catch #(js/console.log %))
(.then #(.close browser)))))))))
Using plet
this becomes:
(plet [browser (.launch puppeteer)
page (.newPage browser)
_ (.goto page "https://clojure.org")
_ (-> (.screenshot page #js{:path "screenshot.png"})
(.catch #(js/console.log %)))]
(.close browser))
See the puppeteer example for the full code.
Since v0.0.36, nbb includes promesa which is a library to deal with promises. The above plet
macro is similar to promesa.core/let
.
$ time nbb -e '(+ 1 2 3)'
6
nbb -e '(+ 1 2 3)' 0.17s user 0.02s system 109% cpu 0.168 total
The baseline startup time for a script is about 170ms seconds on my laptop. When invoked via npx
this adds another 300ms or so, so for faster startup, either use a globally installed nbb
or use $(npm bin)/nbb script.cljs
to bypass npx
.
Nbb does not depend on any NPM dependencies. All NPM libraries loaded by a script are resolved relative to that script. When using the Reagent module, React is resolved in the same way as any other NPM library.
To load .cljs
files from local paths or dependencies, you can use the --classpath
argument. The current dir is added to the classpath automatically. So if there is a file foo/bar.cljs
relative to your current dir, then you can load it via (:require [foo.bar :as fb])
. Note that nbb
uses the same naming conventions for namespaces and directories as other Clojure tools: foo-bar
in the namespace name becomes foo_bar
in the directory name.
To load dependencies from the Clojure ecosystem, you can use the Clojure CLI or babashka to download them and produce a classpath:
$ classpath="$(clojure -A:nbb -Spath -Sdeps '{:aliases {:nbb {:replace-deps {com.github.seancorfield/honeysql {:git/tag "v2.0.0-rc5" :git/sha "01c3a55"}}}}}')"
and then feed it to the --classpath
argument:
$ nbb --classpath "$classpath" -e "(require '[honey.sql :as sql]) (sql/format {:select :foo :from :bar :where [:= :baz 2]})"
["SELECT foo FROM bar WHERE baz = ?" 2]
Currently nbb
only reads from directories, not jar files, so you are encouraged to use git libs. Support for .jar
files will be added later.
The name of the file that is currently being executed is available via nbb.core/*file*
or on the metadata of vars:
(ns foo
(:require [nbb.core :refer [*file*]]))
(prn *file*) ;; "/private/tmp/foo.cljs"
(defn f [])
(prn (:file (meta #'f))) ;; "/private/tmp/foo.cljs"
Nbb includes reagent.core
which will be lazily loaded when required. You can use this together with ink to create a TUI application:
$ npm install ink
ink-demo.cljs
:
(ns ink-demo
(:require ["ink" :refer [render Text]]
[reagent.core :as r]))
(defonce state (r/atom 0))
(doseq [n (range 1 11)]
(js/setTimeout #(swap! state inc) (* n 500)))
(defn hello []
[:> Text {:color "green"} "Hello, world! " @state])
(render (r/as-element [hello]))
Working with callbacks and promises can become tedious. Since nbb v0.0.36 the promesa.core
namespace is included with the let
and do!
macros. An example:
(ns prom
(:require [promesa.core :as p]))
(defn sleep [ms]
(js/Promise.
(fn [resolve _]
(js/setTimeout resolve ms))))
(defn do-stuff
[]
(p/do!
(println "Doing stuff which takes a while")
(sleep 1000)
1))
(p/let [a (do-stuff)
b (inc a)
c (do-stuff)
d (+ b c)]
(prn d))
$ nbb prom.cljs
Doing stuff which takes a while
Doing stuff which takes a while
3
Also see API docs.
Since nbb v0.0.75 applied-science/js-interop is available:
(ns example
(:require [applied-science.js-interop :as j]))
(def o (j/lit {:a 1 :b 2 :c {:d 1}}))
(prn (j/select-keys o [:a :b])) ;; #js {:a 1, :b 2}
(prn (j/get-in o [:c :d])) ;; 1
Most of this library is supported in nbb, except the following:
:syms
.-x
notation. In nbb, you must use keywords.See the example of what is currently supported.
See the examples directory for small examples.
Also check out these projects built with nbb:
See API documentation.
See this gist on how to convert an nbb script or project to shadow-cljs.
Prequisites:
To build:
bb release
Run bb tasks
for more project-related tasks.
Download Details:
Author: borkdude
Download Link: Download The Source Code
Official Website: https://github.com/borkdude/nbb
License: EPL-1.0
#node #javascript
1616839211
Top organizations and start-ups hire Node.js developers from SISGAIN for their strategic software development projects in Illinois, USA. On the off chance that you are searching for a first rate innovation to assemble a constant Node.js web application development or a module, Node.js applications are the most appropriate alternative to pick. As Leading Node.js development company, we leverage our profound information on its segments and convey solutions that bring noteworthy business results. For more information email us at hello@sisgain.com
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1622719015
Front-end web development has been overwhelmed by JavaScript highlights for quite a long time. Google, Facebook, Wikipedia, and most of all online pages use JS for customer side activities. As of late, it additionally made a shift to cross-platform mobile development as a main technology in React Native, Nativescript, Apache Cordova, and other crossover devices.
Throughout the most recent couple of years, Node.js moved to backend development as well. Designers need to utilize a similar tech stack for the whole web project without learning another language for server-side development. Node.js is a device that adjusts JS usefulness and syntax to the backend.
Node.js isn’t a language, or library, or system. It’s a runtime situation: commonly JavaScript needs a program to work, however Node.js makes appropriate settings for JS to run outside of the program. It’s based on a JavaScript V8 motor that can run in Chrome, different programs, or independently.
The extent of V8 is to change JS program situated code into machine code — so JS turns into a broadly useful language and can be perceived by servers. This is one of the advantages of utilizing Node.js in web application development: it expands the usefulness of JavaScript, permitting designers to coordinate the language with APIs, different languages, and outside libraries.
Of late, organizations have been effectively changing from their backend tech stacks to Node.js. LinkedIn picked Node.js over Ruby on Rails since it took care of expanding responsibility better and decreased the quantity of servers by multiple times. PayPal and Netflix did something comparative, just they had a goal to change their design to microservices. We should investigate the motivations to pick Node.JS for web application development and when we are planning to hire node js developers.
The principal thing that makes Node.js a go-to environment for web development is its JavaScript legacy. It’s the most well known language right now with a great many free devices and a functioning local area. Node.js, because of its association with JS, immediately rose in ubiquity — presently it has in excess of 368 million downloads and a great many free tools in the bundle module.
Alongside prevalence, Node.js additionally acquired the fundamental JS benefits:
In addition, it’s a piece of a well known MEAN tech stack (the blend of MongoDB, Express.js, Angular, and Node.js — four tools that handle all vital parts of web application development).
This is perhaps the most clear advantage of Node.js web application development. JavaScript is an unquestionable requirement for web development. Regardless of whether you construct a multi-page or single-page application, you need to know JS well. On the off chance that you are now OK with JavaScript, learning Node.js won’t be an issue. Grammar, fundamental usefulness, primary standards — every one of these things are comparable.
In the event that you have JS designers in your group, it will be simpler for them to learn JS-based Node than a totally new dialect. What’s more, the front-end and back-end codebase will be basically the same, simple to peruse, and keep up — in light of the fact that they are both JS-based.
There’s another motivation behind why Node.js got famous so rapidly. The environment suits well the idea of microservice development (spilling stone monument usefulness into handfuls or many more modest administrations).
Microservices need to speak with one another rapidly — and Node.js is probably the quickest device in information handling. Among the fundamental Node.js benefits for programming development are its non-obstructing algorithms.
Node.js measures a few demands all at once without trusting that the first will be concluded. Many microservices can send messages to one another, and they will be gotten and addressed all the while.
Node.js was worked in view of adaptability — its name really says it. The environment permits numerous hubs to run all the while and speak with one another. Here’s the reason Node.js adaptability is better than other web backend development arrangements.
Node.js has a module that is liable for load adjusting for each running CPU center. This is one of numerous Node.js module benefits: you can run various hubs all at once, and the environment will naturally adjust the responsibility.
Node.js permits even apportioning: you can part your application into various situations. You show various forms of the application to different clients, in light of their age, interests, area, language, and so on. This builds personalization and diminishes responsibility. Hub accomplishes this with kid measures — tasks that rapidly speak with one another and share a similar root.
What’s more, Node’s non-hindering solicitation handling framework adds to fast, letting applications measure a great many solicitations.
Numerous designers consider nonconcurrent to be one of the two impediments and benefits of Node.js web application development. In Node, at whatever point the capacity is executed, the code consequently sends a callback. As the quantity of capacities develops, so does the number of callbacks — and you end up in a circumstance known as the callback damnation.
In any case, Node.js offers an exit plan. You can utilize systems that will plan capacities and sort through callbacks. Systems will associate comparable capacities consequently — so you can track down an essential component via search or in an envelope. At that point, there’s no compelling reason to look through callbacks.
So, these are some of the top benefits of Nodejs in web application development. This is how Nodejs is contributing a lot to the field of web application development.
I hope now you are totally aware of the whole process of how Nodejs is really important for your web project. If you are looking to hire a node js development company in India then I would suggest that you take a little consultancy too whenever you call.
Good Luck!
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1616671994
If you look at the backend technology used by today’s most popular apps there is one thing you would find common among them and that is the use of NodeJS Framework. Yes, the NodeJS framework is that effective and successful.
If you wish to have a strong backend for efficient app performance then have NodeJS at the backend.
WebClues Infotech offers different levels of experienced and expert professionals for your app development needs. So hire a dedicated NodeJS developer from WebClues Infotech with your experience requirement and expertise.
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