Eric  Bukenya

Eric Bukenya

1631084400

How To Build a Timer With Nuxt.js and Tailwind CSS

Build a timer with Nuxt.js and Tailwind CSS.

#nuxtjs #tailwindcss 

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How To Build a Timer With Nuxt.js and Tailwind CSS

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

Dylan  Iqbal

Dylan Iqbal

1626920160

A Simple CV Generator Built with Nuxt.js and Tailwind CSS

CvFy

CvFy is a simple CV maker that makes CV creation faster and easier in both English and Spanish.

It’s built with NuxtJs and deployed in Netlify.

I usually enjoy styling from scratch but this time I’ve used TailwindCSS for the first time to see what all the fuss was about.

PDF creation is client-side only, so results may differ among browsers. Chrome desktop has the best print as the PDF created is exactly as the preview one.

It’s also a PWA so it can be used offline.

Demo: https://cvfy.netlify.app/

Build Setup

# install dependencies
$ npm install

# serve with hot reload at localhost:3000
$ npm run dev

# build for production and launch server
$ npm run build
$ npm run start

# generate static project
$ npm run generate

For detailed explanation on how things work, check out Nuxt.js docs.

Download Details:

Author: claudiabdm
The Demo/Documentation: View The Demo/Documentation
Download Link: Download The Source Code
Official Website: https://github.com/claudiabdm/cvfy

Shirts and Gifts for You, Your Friends & Loved ☞ https://bit.ly/36PHvXY

#nuxt #tailwind #css #tailwindcss #vue

Opal  Gulgowski

Opal Gulgowski

1627357620

How to Build A IP Tracking App with Vue 3, Tailwind CSS & Leaflet.js

in this video we build an ip tracking app using vue 3 & the composition api, tailwind css & leaflet.js. We cover all the basics of setting up an application using the Vue 3 Composition API such as: setting up the “setup option”, creating data values & functions, making data reactive & lifecycle hooks.

We don’t cover everything, but we touch upon enough to create a simple starting app. This video should give you the knowledge & confidence to start build apps using Vue 3 & the Composition API.

Starting Repo: https://github.com/johnkomarnicki/vue-tailwinds-ip-tracker/tree/starting-files
Completed Repo: https://github.com/johnkomarnicki/vue-tailwinds-ip-tracker/tree/completed-app

Timestamps:
0:00 Introduction
3:42 Project Setup
9:55 Update Page/Document Title
12:07 Search Input
23:04 IP Address Info Component
30:12 Leaflet Map Implementation
36:45 Get Geolocation Function

#vue #vue3 #leaflet #vue3compositionapi
Current Subscribers: 1,789

#tailwind css #vue #leaflet #leaflet.js #css

Building a Photo Gallery With CSS Grid and Tailwind CSS

Building a photo gallery has been a tough nut to crack for so many years. Throughout my career, I’ve used <table> layouts, <div>s with brittle margins and set widths, and tried my hand at flexbox. While all of these methods have worked, none of them felt like that silver bullet solution.

Then one day, the CSS gods bestowed upon us the magical power of CSS grids. Now, making a grid-based layout is an absolute delight. And, when we use grids with Tailwind CSS, we can create beautiful, functional UIs in a fraction of the time it used to take. So, let’s hop right in and see how we can use them to make a photo gallery.

  • The Set-Up
  • Our HTML
  • Layouts With CSS Grid
  • Mobile Layout
  • Styling With Tailwind CSS
  • The Wrap-Up

#tailwind css #css grid #css

Eric  Bukenya

Eric Bukenya

1624705980

How To Build an About Me Page With Laravel Sail and Tailwind CSS

Introduction

Laravel Sail is a Docker development environment included by default in Laravel since version 8. It allows you to quickly get a PHP development environment up and running, tailored for running Laravel applications with built-in support for NPM / Node.

In this guide, you’ll bootstrap a new Laravel application with Laravel Sail and create a styled “about me” landing page using Tailwind CSS, a utility-first CSS framework designed for rapidly building custom user interfaces. At the end, you’ll have a base that you can use to further develop a Laravel application using Tailwind CSS for the front end and Sail for the development environment.

Prerequisites

Although the code shared in this guide should work seamlessly across multiple environments and systems, the instructions explained here were tested within an Ubuntu 20.04 local system running Docker and Docker Compose. Regardless of your base operating system, here’s what you’ll need to set up in order to get started:

  • Docker installed on your local machine. If you’re running Ubuntu 20.04, you can follow Steps 1 and 2 of How To Install and Use Docker on Ubuntu 20.04 to set it up. Windows and MacOS users need to install Docker Desktop instead.

  • Docker Compose installed on your local machine. Docker Compose comes included by default with Docker Desktop for both Windows and MacOS systems, but Linux users need to install the Compose executable, following Step 1 of How To Install and Use Docker Compose on Ubuntu 20.04.

  • A code editor for PHP (optional). A code editor helps making code easier to read and to format, and can improve your productivity by pointing out issues before you execute your code. You can follow our guide on How To Set Up Visual Studio Code for PHP Projects to set up VSCode, a free code editor, within your local development environment.

  • Step 1 — Creating a New Laravel Application Using the Laravel Builder Script

  • Step 2 — Using Laravel Sail

  • Step 3 — Setting Up Tailwind CSS with Laravel

  • Step 4 — Creating a Landing Page

  • Step 5 — Styling Your Landing Page with Tailwind CSS

#tailwind css #laravel #css #tailwind