How Nuxt.js Redirects to another Page

Nuxt.js redirects are really simple to do due to the fetch lifecycle hook and context object that nuxt passes to it.

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How Nuxt.js Redirects to another Page

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

Guide To WordPress Redirects (Steps To Follow)

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You will observe that many of your URLs have been changed whenever you redesign your website. This is also applicable whenever you made certain changes to its permalink structure. Ultimately, it creates a big issue for users as well as search engines.

Here, comes the role of WordPress redirects which contributes to providing a simple solution. Whenever you make use of a redirect, your visitors would not be negatively impacted. This is something that will keep your search engine rankings intact.

If you are thinking about how to do redirects in WordPress, then don’t worry as this article will provide you a detailed guide on this.

What Is A Page Redirect?

This is a set of rules which tells a browser to forward your visitors from a specific link they clicked on to a diverse page.

Whenever you redirect a page, there are mainly two outcomes for your end-users. Either, they will see a redirection message or they will be simply redirected without any notification.

This is image title

Adding redirects becomes important whenever you have redesigned your website, made certain updates to your permalinks, or changed your domain. This is necessary to make your pre-existing content accessible to search engines as well as readers.

So, it can be said, that you are forwarding your users to a completed new web page with the help of these redirects.

When You Should Focus On Redirecting A Page?

There are many reasons, for which you may wish to redirect URLs on your website. Some of the most common reasons for this include the following:

  • The URL of the page is changing.
  • A specific page that is no longer relevant.
  • Focusing to move your domain from HTTP to HTTPS.
  • You are deleting or moving your content.
  • You are changing your original domain name or making use of a different domain.

Additionally, redirects can also help you to make sure that if a page is missing or broken, then the users will be sent along with the other content of your website without any sort of interruption.

Different Types Of Redirects To Know About

There are some of how you can make use of a redirect. Not only that but there are many other types as well. Below, you will find some of the most common redirect methods which you might need to use.

(A) 301 Permanent Redirect

If you are permanently deleting or moving a page, then this redirect is generally used. It may be used when you are considering moving your website from one URL to another or you are switching to a new hosting service.

(B) 302 Temporary Redirects

This is a temporary redirect that should be used with caution as well as tested for browser compatibility. Also, this redirect tells the user that the file that you are looking for exists. But, it is not loading for some particular reason.

After that, the users are offered an alternative option. These redirects can again carry SEO penalties specifically for long-term use. So, this is a good option for temporary websites.

© 303 See Other

This is considered to be very important specifically in terms of security. Often, this is used as a replacement for the 302 redirects whenever issues arise. This type of redirect prevents users from submitting the same information more than once.

They will be redirected to a different page once they submit their information. You can also prevent refreshing or bookmarking sensitive data like credit card information. So, this prevents users from making any mistakes like accidentally purchasing the same item twice.

(D)307

This redirect is similar in functionality as well as purpose to the 303 redirects. Here, the main difference lies in the way, in which it receives and sends information.

Only, one data exchange method is used in this case. So, this can be called a true temporary redirect. But, a 303 redirect makes use of two methods.

(E)308

This is known to be a permanent redirect similar to 301 redirects. It is mainly used whenever the location of a file has changed.

The main difference existing between 308 and 301 is that the 308 can only make use of the POST method whereas a 301 can specifically change the HTTP method from POST to GET.

(F) HTTP To HTTPS Redirect

There are several advantages of an HTTPS URL over an HTTP URL both in terms of SEO and security. However, you will need to set up a redirect that forces browsers to display the HTTPS version of your pages.

[Learn more]

#how to do redirects in wordpress #wordpress 301 redirects #wordpress plugin for 301 redirects #wordpress redirects #wordpress redirects to another site #wordpress redirects to https

Lupe  Connelly

Lupe Connelly

1626960900

Create Dating App (Vue Js Capacitor) Using Nuxt Js, Laravel, Socket IO - #3

Give me a design and coding challenge !

Day for #100DaysOfCode Challenge

Sources :
Trello : https://trello.com/invite/b/kGXI8zlV/d4a415ab005f801d82939d886232334e/100daysofcode
Figma https://figma.com/@kewcoder
Github https://github.com/kewcoder

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Lupe  Connelly

Lupe Connelly

1626953460

Create Dating App (Vue Js Capacitor) Using Nuxt Js, Laravel, Socket IO - #1

Give me a design and coding challenge !

Day for #100DaysOfCode Challenge

Sources :
Trello : https://trello.com/invite/b/kGXI8zlV/d4a415ab005f801d82939d886232334e/100daysofcode
Figma https://figma.com/@kewcoder
Github https://github.com/kewcoder

#laravel #nuxt #nuxt js #socket io #vue js

Hire Dedicated Node.js Developers - Hire Node.js Developers

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