easy tab component, pure js + css, without react

This is tab example 1

Passion Organization Content Engagement this is passion pannel this is organization pannel this is engagement pannel

This is tab example 2

Passion Organization Content Engagement this is passion pannel 2 this is organization pannel 2 this is engagement pannel 2

end test

This is haha node

styles

<style>
.container {
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}
.tabs {
    padding-left: 0;
    margin-bottom: 0;
    list-style: none; 
}
ol, ul {
    margin-top: 0;
    margin-bottom: 10px;
}
.tabs > li {    
    margin-bottom: -1px;
    position: relative;
    display: inline-block; 
 padding: 6px 12px;
 border-radius: 5px 5px 0 0;
 background-color: #aac4bd;
 border: 2px solid #7ea299;
 margin-right: 2px;
 color: #fff;
 cursor: pointer;
}
.tabs > li.active {
 background-color: #fbfbfc;
 border-bottom: 0;
 padding-bottom: 8px;
 color: #7ea299; 
}
.tabs > li:hover {
 background-color: #fbfbfc;
 color: #7ea299;  
}
.tabcontent {
 border: 2px solid #7ea299;
 -webkit-box-shadow: .055rem .055rem 1.11rem hsla(0,0%,8%,.27);
 box-shadow: .055rem .055rem 1.11rem hsla(0,0%,8%,.27);
 background-color: #fbfbfc;
 margin: -1px 0 0;
 padding: 4px; 
}
.tabcontent > .panel {
    display: none;
}
.tabcontent > .active {
    display: block;
}
</style>

use example

<div>
This is tab example 1
</div>
<Tabs>
<TabList>
  <Tab>Passion</Tab>
  <Tab>Organization Content</Tab>
  <Tab>Engagement</Tab>
</TabList>
<TabPanel>
  this is passion pannel
</TabPanel> 
<TabPanel>
this is organization pannel
</TabPanel>
<TabPanel>
this is engagement pannel
</TabPanel> 
</Tabs>
<div>
This is tab example 2
</div>
<Tabs>
<TabList>
  <Tab>Passion</Tab>
  <Tab>Organization Content</Tab>
  <Tab class='active'>Engagement</Tab>
</TabList>
<TabPanel>
  this is passion pannel 2
</TabPanel> 
<TabPanel>
this is organization pannel 2
</TabPanel>
<TabPanel>
this is engagement pannel 2
</TabPanel> 
</Tabs>
<div>
end test
</div>

javascript

<script type="text/javascript">
document.querySelectorAll('Tabs').forEach(function(tabs) {
  let pn = tabs.parentNode;
  let ct = document.createElement('div');
  ct.className = 'container';
  let ul = document.createElement('ul');
  ul.className = 'tabs';
  ct.appendChild(ul);
  let ai = 0;
  let index = 0;
  tabs.querySelectorAll('Tab').forEach(function(tab) {
    let li = document.createElement('li');
 li.className = tab.className;
 if (li.className.indexOf('active') != -1) {
   ai = index;
 }
 li.innerText = tab.innerText;
 li.id = index;
 li.onclick = function(e) {
   e = e || window.event;
      let target = e.target || e.srcElement;
   if (target.className.indexOf('active') != -1)
     return;  
   let ft = target.parentNode.querySelector('.active');
   ft.className = ft.className.replace('active', '');
   target.className = target.className + " active";
   let cp = target.parentNode.parentNode.querySelector('.tabcontent .active');
      cp.className = cp.className.replace('active', '');
   cp = target.parentNode.parentNode.querySelector('.tabcontent #panel'+target.id);
      cp.className = cp.className + " active";
   // target.parentNode.parentNode.style.display = 'block';
 }
    ul.appendChild(li); 
 index = index+1;
  });
  if (ai == 0) {
    if (ul.firstChild.className.indexOf('active') == -1) {
   ul.firstChild.className += ' active';
 }
  }
  let tc = document.createElement('div');
  tc.className = 'tabcontent';
  ct.appendChild(tc);
  index = 0;
  tabs.querySelectorAll('TabPanel').forEach(function(tabpanel) {
    let pl = document.createElement('div');
 pl.className = 'panel';
 pl.id = 'panel'+index;
 if (index == ai) {
   pl.className += ' active';
 }
 pl.innerHTML = tabpanel.innerHTML;
 tc.appendChild(pl);
 index = index+1;
  });
  pn.insertBefore(ct, tabs);
  pn.removeChild(tabs);
});
</script>

How to Record video use getUserMedia and MediaRecorder API

example

sample codes

  <div>
    <video id='camera'></video>
  </div>
  <script type='text/javascript'>
    var p = navigator.mediaDevices.getUserMedia({ audio: true, video: true });
    p.then(function(mediaStream) {
      var video = document.querySelector('video');
      video.src = window.URL.createObjectURL(mediaStream);
      video.onloadedmetadata = function() {
        video.muted = true;
        video.play();
      }
      var mediaRecorder = new MediaRecorder(mediaStream);
      var chunks = [];
      mediaRecorder.ondataavailable = function(e) {
        chunks.push(e.data);
      }
      mediaRecorder.onstop = function() {
        var blob = new Blob(chunks, {'type' : 'video/webm'});
        chunks = [];
        var hyperlink = document.createElement('a');
        hyperlink.href = URL.createObjectURL(blob);
        video.src = hyperlink.href;
        video.muted = false;
        video.controls = true;
        hyperlink.download = 'record.mp4';
        hyperlink.style = 'display:none;opacity:0;color:transparent;';
        (document.body || document.documentElement).appendChild(hyperlink);
if (typeof hyperlink.click === 'function') {
  hyperlink.click();
} else {
            hyperlink.target = '_blank';
            hyperlink.dispatchEvent(new MouseEvent('click', {
                view: window,
                bubbles: true,
                cancelable: true
            }));
        }     
    }
      mediaRecorder.start();      
      setTimeout(function() {
        mediaRecorder.stop();
        video.src = '';
        video.muted = false;
        video.stop();
      }, 10000);
    });
</script>

Ghost publishing platform sources: how hbs template engine is set to its site app

core js codes

in core/server/services/themes/active.js:

        // Set the views and engine         siteApp.set('views', this.path);         siteApp.engine('hbs', engine.configure(this.partialsPath)); 

Refers

https://expressjs.com/en/guide/using-template-engines.html
https://docs.ghost.org/api/handlebars-themes/

sqlite3 show all tables of a database

show all tables of a database

open database file via sqlite3
sqlite3 content/data/ghost-dev.db
command to list all tables
.tables || .table

$sqlite3  content/data/ghost-dev.db       SQLite version 3.11.0 2016-02-15 17:29:24 Enter ".help" for usage hints. sqlite> .tables accesstokens            migrations              refreshtokens          api_keys                migrations_lock         roles                  app_fields              mobiledoc_revisions     roles_users            app_settings            permissions             sessions               apps                    permissions_apps        settings               brute                   permissions_roles       subscribers            client_trusted_domains  permissions_users       tags                   clients                 posts                   users                  integrations            posts_authors           webhooks               invites                 posts_tags             

show table structure

select * from tablename;

sqlite> select * from posts; id|uuid|title|slug|mobiledoc|html|comment_id|plaintext|feature_image|featured|page|status|locale|visibility|meta_title|meta_description|author_id|created_at|created_by|updated_at|updated_by|published_at|published_by|custom_excerpt|codeinjection_head|codeinjection_foot|og_image|og_title|og_description|twitter_image|twitter_title|twitter_description|custom_template 

coca top 20000 words: TOP 20000 words from Corpus of Contemporary American English

TOP 20000 words

Here you are! https://coca.errong.win

Hack to ghost core: mount/add new apps/sites on your ghost server

Install ghost from source

First, you should know how to develop with ghost.

create a new react app under core/server folder

simple example

core/server$ mkdir newapp
core/server$ cd newapp
core/server/newapp$ 
Ghost/core/server/web/newapp$ ls
app.js  controller.js  index.js
Ghost/core/server/web/newapp$ cat index.js 
module.exports = require('./app');
Ghost/core/server/web/newapp$ cat app.js 
const express = require('express');
module.exports = function setupNewApp() {
    const newApp = express();
    newApp.get('*', require('./controller'));
    return newApp;
};
Ghost/core/server/web/newapp$ cat controller.js 
const path = require('path');

module.exports = function newAppController(req, res) {
    res.send('Welcome to new App!');
};

Add route for your new site/app

./core/server/app.js

    // Mount the  apps on the parentApp
  
    // ADMIN
    parentApp.use('/ghost', require('./admin')());

    // import new app/site
    parentApp.use('/newsite', require('./newapp')());
    
    // BLOG
    parentApp.use(require('./site')()); 

Notes

above are for ghost before 2.0 version.
for latest ghost, version 2.0,
The folder for new app should be "Ghost/core/server/web/newapp"
The hacked core js is Ghost/core/server/web/parent-app.js
The code for add route is same as above.

Work your new app

grunt dev
navigate to http://localhost:2368/newapp, you will get:

A simple web audio player, bind to <span/>, one click, audio play, click again, audio stop

example

All you have to is to write below html code:
a span with class name of word-audio and attribute of data-src pointed to a audio stream resource

<span class='word-audio audio' style='display:inline-block' 

data-src='https://cdn.mp3xa.pw/proxy/cs1-43v4.vkuseraudio.net/

p17/fe6d95af2cee33.mp3'></span> 

Bertie Higgins — Casablanca

word.js

  
  function startAnimation(e) {
    if (e.className == 'word-audio audio')
      e.className = 'word-audio audio-light';
    else if (e.className == 'word-audio audio-light')
      e.className = 'word-audio audio-playing';
    else
      e.className = 'word-audio audio'
    console.log(e.className);
  }
  function play(e, context, audioBuffer) {
    if (e.state == 1) {
      e.source.stop();
      e.source.onended();
      e.source = null;
    } else {
      e.state = 1;
      const source = context.createBufferSource();
      e.source = source;
      source.buffer = audioBuffer;
      source.connect(context.destination);
      source.start();
      let it = setInterval(function() {startAnimation(e)}, 300);    
      source.onended = function() {
        e.state = 0;
        clearInterval(it);
        e.className = 'word-audio audio';
      }
    }
  }
  document.querySelectorAll('.word-audio').forEach(function(e, index) {
    let url = e.attributes['data-src'].nodeValue;
    let context = new AudioContext();
    e.state = 0;
    let wordBuffer;
    window.fetch(url)
      .then(response => response.arrayBuffer())
      .then(arrayBuffer => context.decodeAudioData(arrayBuffer))
      .then(audioBuffer => {
        e.disabled = false;
        wordBuffer = audioBuffer;
        //play(e, context, wordBuffer);
      });
    e.onclick = function() {
      play(e, context, wordBuffer);       
    }
  });

word.css

.audio {
    display: inline-block;
    width: 20px;
    height: 20px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    vertical-align: middle;
    background: url(audio.png) no-repeat -40px 0/auto 100%;
}

.audio-playing {
    display: inline-block;
    width: 20px;
    height: 20px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    vertical-align: middle;
    background: url(audio.png) no-repeat -20px 0/auto 100%;
}

.audio-light {
    display: inline-block;
    width: 20px;
    height: 20px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    vertical-align: middle;
    background: url(audio.png) no-repeat 0px 0/auto 100%;
}