Ethan Hughes

Ethan Hughes

1613640180

A Smart Data Table Component for React.js

react-smart-data-table

A smart data table component for React.js meant to be configuration free

About

This is meant to be a zero configuration data table component for React.js in the spirit of plug and play.

Just feed it an array of equal JSON objects and it will create a template free table that can be customized easily with any framework (or custom CSS).

If you want more control over the data rendering process or don’t need the smarts, check out react-very-simple-data-table.

Features

It currently supports:

  1. Humanized column names based on object keys
  2. Sortable columns
  3. Rows filtering / searchable
  4. Search term highlight in the results
  5. Column visibility toggles
  6. Automatic pagination
  7. Server-side/remote data
  8. Control over row clicks
  9. Smart data rendering
    • URLs and E-Mail addresses rendered as the href in an anchor tag <a />
    • boolean value parsing to yes/no word
    • Image URLs rendered as the src for an image tag <img />
  10. Custom override if the default behavior is unwanted for some columns
  11. Custom components
    * Paginator
  12. Control the order of the columns
    * Using the above, it’s also possible to select which columns to display

Installation

yarn add react-smart-data-table

# or

npm install react-smart-data-table

There is some very basic styling you can use to get started, but since v0.8.0 you need to import it specifically. You can also copy the file and use it as the basis for your own theme.

// Import basic styling
import 'react-smart-data-table/dist/react-smart-data-table.css'

Props

Name Default Type Description
data [] {array string}
dataKey ‘data’ {string} The object key where the async data is available
headers {} {object} The object that overrides default column behavior
name reactsmartdatatable {string} The name for the table
sortable false {boolean} Makes the columns of the table sortable
withToggles false {boolean} Enables the column visibility toggles
withLinks false {boolean} Converts e-mails and url addresses to links
withHeader true {boolean} Can be used to disable the rendering of column headers
withFooter false {boolean} Copy the header to the footer
filterValue ‘’ {string} Filters all columns by its value
perPage 0 {number} Paginates the results with the value as rows per page
loader null {element} Element to be rendered while fetching async data
onRowClick undefined {function} If present, it will execute on every row click
parseBool false {boolean object}
parseImg false {boolean object}
dynamic false {boolean} Use this if your column structure changes dynamically
emptyTable null {element} Pass a renderable object to render when there is no data
paginator elements {element} Pass a renderable object to handle the table pagination
orderedHeaders [] {array} An ordered array of the column keys
hideUnordered false {boolean} Hides all the columns not passed to orderedHeaders

headers

/*
  Use the following structure to overwrite the default behavior for columns
  Undefined column keys will present the default behavior
    text:       Humanized text based on the column key name
    invisible:  Columns are visible by default
    sortable:   Columns are sortable by default
    filterable: Columns are filterable by default
    isImg:      Will force the render as an image, e.g. for dynamic URLs
    transform:  Allows the custom rendering of the cells content
                Should be a function and these are the arguments passed:
                  (value, index, row)
                The index is the position of the row as being rendered and
                not the index of the row in the original data
  Nested structures can be defined by a string-dot representation
    'key1.key2.key3.[...].key99'
*/
const headers = {
  columnKey: {
    text: 'Column 1',
    invisible: false,
    sortable: true,
    filterable: true,
  },
  'nested.columnKey': {
    text: 'Nested Column',
    invisible: false,
    sortable: true,
    filterable: true,
  },
  // If a dummy column is inserted into the data, it can be used to customize
  // the table by allowing actions per row to be implemented, for example
  tableActions: {
    text: 'Actions',
    invisible: false,
    sortable: false,
    filterable: false,
    transform: (value, index, row) => {
      // The following results should be identical
      console.log(value, row.tableActions)
      // Example of table actions: Delete row from data by row index
      return <button onClick={() => deleteRow(row)}>Delete Row</button>
    },
  },
}

onRowClick()

const onRowClick = (event, { rowData, rowIndex, tableData }) => {
  // The following results should be identical
  console.log(rowData, tableData[rowIndex])
}

parseBool

// Default
const parseBool = {
  yesWord: 'Yes',
  noWord: 'No',
}

parseImg

// You can pass a regular style object that will be passed down to <img />
// Or a Class Name
const parseImg = {
  style: {
    border: '1px solid #ddd',
    borderRadius: '4px',
    padding: '5px',
    width: '150px',
  },
  className: 'my-custom-image-style',
}

emptyTable

// Any renderable object can be passed
const emptyTable = <div>There is no data available at the time.</div>

paginator

The CustomComponent passed down as a prop will be rendered with the following props which can be used to perform all the necessary calculations and makes it fully compatible with Semantic UI’s Pagination component.

const CustomComponent = ({
  activePage, totalPages, onPageChange,
}) => (/* ... */)

<SmartDataTable
  // ...
  paginator={CustomComponent}
/>

// To change the page, call the onPageChange function with the next activePage

<MyCustomElement
  // ...
  onClick={e => this.onPageChange(e, { activePage: nextActivePage })}
/>

orderedHeaders / hideUnordered

If you want to control the order of the columns, simply pass an array containing the keys in the desired order. All the omitted headers will be appended afterwards unpredictably. Additionally, you can pass the hideUnordered in order to render only the headers in orderedHeaders and hide the remaining.

const hideUnordered = true

const orderedHeaders = [
  'key1',
  'key2.subkey3',
  ...
]

Examples

Async data loading (fetch)

By passing a string to the data prop, the component will interpret it as an URL and try to load the data from that location using fetch. If a successful request is returned, the data will be extracted from the data key in the response object. If it’s in a different key, you can specify it with the dataKey prop.

response

{
  "status": "success",
  "message": "",
  "data": [{ "id": 0, "other": "..." }, { "id": 1, "other": "..." }, "..."]
}

component

<SmartDataTable data="/api/v1/data" dataKey="data" name="test-table" />

Simple sortable table (with Semantic UI)

import React from 'react'
import ReactDOM from 'react-dom'
import faker from 'faker'
import SmartDataTable from 'react-smart-data-table'

var testData = []
var numResults = 100

for (var i = 0; i < numResults; i++) {
  testData.push({
    _id: i,
    fullName: faker.name.findName(),
    'email.address': faker.internet.email(),
    phone_number: faker.phone.phoneNumber(),
    address: {
      city: faker.address.city(),
      state: faker.address.state(),
      country: faker.address.country(),
    },
  })
}

ReactDOM.render(
  <SmartDataTable
    data={testData}
    name="test-table"
    className="ui compact selectable table"
    sortable
  />,
  document.getElementById('app'),
)

Demos

You can try react-smart-data-table with different UI libraries in the demo pages below. You can experiment with different features as well.

Take a look at the full featured example’s source code.

Also, see it in full integration with a simple user/group management dashboard application. Feel free to play around with it, it’s built with hot reloading.

Forking / Contributing

If you want to fork or contribute, it’s easy to test your changes. Just run the following development commands. The start instruction will start a development HTTP server in your computer accessible from your browser at the address http://localhost:3000/.

yarn start

Download Details:

Author: joaocarmo

Source Code: https://github.com/joaocarmo/react-smart-data-table

#react #reactjs #javascript

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A Smart Data Table Component for React.js
Autumn  Blick

Autumn Blick

1598839687

How native is React Native? | React Native vs Native App Development

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.

A brief introduction to React Native

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:

  • Performance: It delivers optimal performance.
  • Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
  • UI design: React Native enables you to design simple and responsive UI for your mobile app.
  • 3rd party plugins: This framework supports 3rd party plugins.
  • Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

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:

  • Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
  • Near-native user experience: React Native provides several native components, and these are platform agnostic.
  • The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native

sophia tondon

sophia tondon

1621250665

Top React JS Development Company | React JS Development Services

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Planning to** outsource React web Development services from India** using Reactjs? Or would you like to hire a team of Reactjs developers? Get in touch for a free quote!

#hire react js developer #react.js developer #react.js developers #hire reactjs development company #react js development india #react js developer

 iOS App Dev

iOS App Dev

1620466520

Your Data Architecture: Simple Best Practices for Your Data Strategy

If you accumulate data on which you base your decision-making as an organization, you should probably think about your data architecture and possible best practices.

If you accumulate data on which you base your decision-making as an organization, you most probably need to think about your data architecture and consider possible best practices. Gaining a competitive edge, remaining customer-centric to the greatest extent possible, and streamlining processes to get on-the-button outcomes can all be traced back to an organization’s capacity to build a future-ready data architecture.

In what follows, we offer a short overview of the overarching capabilities of data architecture. These include user-centricity, elasticity, robustness, and the capacity to ensure the seamless flow of data at all times. Added to these are automation enablement, plus security and data governance considerations. These points from our checklist for what we perceive to be an anticipatory analytics ecosystem.

#big data #data science #big data analytics #data analysis #data architecture #data transformation #data platform #data strategy #cloud data platform #data acquisition

NBB: Ad-hoc CLJS Scripting on Node.js

Nbb

Not babashka. Node.js babashka!?

Ad-hoc CLJS scripting on Node.js.

Status

Experimental. Please report issues here.

Goals and features

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:

  • Fast startup without relying on a custom version of Node.js.
  • Small artifact (current size is around 1.2MB).
  • First class macros.
  • Support building small TUI apps using Reagent.
  • Complement babashka with libraries from the Node.js ecosystem.

Requirements

Nbb requires Node.js v12 or newer.

How does this tool work?

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).

Usage

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

Macros

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.

Startup time

$ 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.

Dependencies

NPM dependencies

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.

Classpath

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.

Current file

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"

Reagent

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]))

Promesa

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.

Js-interop

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:

  • destructuring using :syms
  • property access using .-x notation. In nbb, you must use keywords.

See the example of what is currently supported.

Examples

See the examples directory for small examples.

Also check out these projects built with nbb:

API

See API documentation.

Migrating to shadow-cljs

See this gist on how to convert an nbb script or project to shadow-cljs.

Build

Prequisites:

  • babashka >= 0.4.0
  • Clojure CLI >= 1.10.3.933
  • Node.js 16.5.0 (lower version may work, but this is the one I used to build)

To build:

  • Clone and cd into this repo
  • 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

Mathew Rini

1615544450

How to Select and Hire the Best React JS and React Native Developers?

Since March 2020 reached 556 million monthly downloads have increased, It shows that React JS has been steadily growing. React.js also provides a desirable amount of pliancy and efficiency for developing innovative solutions with interactive user interfaces. It’s no surprise that an increasing number of businesses are adopting this technology. How do you select and recruit React.js developers who will propel your project forward? How much does a React developer make? We’ll bring you here all the details you need.

What is React.js?

Facebook built and maintains React.js, an open-source JavaScript library for designing development tools. React.js is used to create single-page applications (SPAs) that can be used in conjunction with React Native to develop native cross-platform apps.

React vs React Native

  • React Native is a platform that uses a collection of mobile-specific components provided by the React kit, while React.js is a JavaScript-based library.
  • React.js and React Native have similar syntax and workflows, but their implementation is quite different.
  • React Native is designed to create native mobile apps that are distinct from those created in Objective-C or Java. React, on the other hand, can be used to develop web apps, hybrid and mobile & desktop applications.
  • React Native, in essence, takes the same conceptual UI cornerstones as standard iOS and Android apps and assembles them using React.js syntax to create a rich mobile experience.

What is the Average React Developer Salary?

In the United States, the average React developer salary is $94,205 a year, or $30-$48 per hour, This is one of the highest among JavaScript developers. The starting salary for junior React.js developers is $60,510 per year, rising to $112,480 for senior roles.

* React.js Developer Salary by Country

  • United States- $120,000
  • Canada - $110,000
  • United Kingdom - $71,820
  • The Netherlands $49,095
  • Spain - $35,423.00
  • France - $44,284
  • Ukraine - $28,990
  • India - $9,843
  • Sweden - $55,173
  • Singapore - $43,801

In context of software developer wage rates, the United States continues to lead. In high-tech cities like San Francisco and New York, average React developer salaries will hit $98K and $114per year, overall.

However, the need for React.js and React Native developer is outpacing local labour markets. As a result, many businesses have difficulty locating and recruiting them locally.

It’s no surprise that for US and European companies looking for professional and budget engineers, offshore regions like India are becoming especially interesting. This area has a large number of app development companies, a good rate with quality, and a good pool of React.js front-end developers.

As per Linkedin, the country’s IT industry employs over a million React specialists. Furthermore, for the same or less money than hiring a React.js programmer locally, you may recruit someone with much expertise and a broader technical stack.

How to Hire React.js Developers?

  • Conduct thorough candidate research, including portfolios and areas of expertise.
  • Before you sit down with your interviewing panel, do some homework.
  • Examine the final outcome and hire the ideal candidate.

Why is React.js Popular?

React is a very strong framework. React.js makes use of a powerful synchronization method known as Virtual DOM, which compares the current page architecture to the expected page architecture and updates the appropriate components as long as the user input.

React is scalable. it utilises a single language, For server-client side, and mobile platform.

React is steady.React.js is completely adaptable, which means it seldom, if ever, updates the user interface. This enables legacy projects to be updated to the most new edition of React.js without having to change the codebase or make a few small changes.

React is adaptable. It can be conveniently paired with various state administrators (e.g., Redux, Flux, Alt or Reflux) and can be used to implement a number of architectural patterns.

Is there a market for React.js programmers?
The need for React.js developers is rising at an unparalleled rate. React.js is currently used by over one million websites around the world. React is used by Fortune 400+ businesses and popular companies such as Facebook, Twitter, Glassdoor and Cloudflare.

Final thoughts:

As you’ve seen, locating and Hire React js Developer and Hire React Native developer is a difficult challenge. You will have less challenges selecting the correct fit for your projects if you identify growing offshore locations (e.g. India) and take into consideration the details above.

If you want to make this process easier, You can visit our website for more, or else to write a email, we’ll help you to finding top rated React.js and React Native developers easier and with strives to create this operation

#hire-react-js-developer #hire-react-native-developer #react #react-native #react-js #hire-react-js-programmer