jhjguxin

headless browser

puppeteer vs jsdom vs phantomjs

• jsdom

jsdom 是一个轻量级的 headless browser, 基于原生的 js 实现 不过不能渲染布局, 具体可以参考 https://github.com/jsdom/jsdom/wiki/jsdom-vs.-PhantomJS

• PhantomJS

jhjguxin

class RingBuffer < Array
  attr_reader :max_size
 
  def initialize(max_size, enum = nil)
    @max_size = max_size
    enum.each { |e| self << e } if enum
  end
 
  def <<(el)
    if self.size < @max_size || @max_size.nil?

jhjguxin

root = "/var/www/cake/current"
working_directory root
pid "#{root}/tmp/pids/unicorn.pid"
stderr_path "#{root}/log/unicorn.stderr.log"
stdout_path "#{root}/log/unicorn.log"

listen "/tmp/unicorn.cake.sock"
worker_processes 2
timeout 15

jhjguxin

```sh
#/bin/bash!
# sudo apt-get install hostapd
# git clone https://github.com/oblique/create_ap.git && cd create_ap
# sudo make install
iwconfig

sudo create_ap wlp3s0 enp4s0f0 francis-ubuntu aaabbbccc123
```

jhjguxin

@media print {
  .col-sm-1, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6, .col-sm-7, .col-sm-8, .col-sm-9, .col-sm-10, .col-sm-11, .col-sm-12 {
    float: left;
  }
  .col-sm-12 {
    width: 100%;
  }
  .col-sm-11 {
    width: 91.66666667%;
  }

jhjguxin

module NumberToChineseAmountInWordsHelper
  # Formats a +number+ into a chinese amount in words(e.g., 壹万元整).
  #
  # === Examples
  # number_to_capital_zh(10001.00)                   # => '壹万元整',
  # number_to_capital_zh(100000.10)              # => '壹拾万元壹角整',
  # number_to_capital_zh(0.1)                    # => '壹角整',
  # number_to_capital_zh(1.11)                   # => '壹元壹角壹分',
  # number_to_capital_zh(1.01)                   # => '壹元零壹分',
  # number_to_capital_zh(0.01)                   # => '壹分',

jhjguxin

require 'axlsx'

Axlsx::Package.new do |package|
  workbook = package.workbook
	workbook.add_worksheet do |sheet|
		wrap = workbook.styles.add_style alignment: {wrap_text: true}
		sheet.add_row ["Foo\r\nBar", "Foo\rBar", "Foo\nBar", "Foo\n\r\nBar"], style: wrap
	end

	package.serialize "linebreak.xlsx"

jhjguxin

set :linked_files, %W{
                       ... config/app.god config/qrsync.json
                       config/application.yml
                     }

# you should remove bin from linked_dirs config
# https://github.com/capistrano/bundler/issues/45
set :linked_dirs, %w{config/unicorn log tmp/pids tmp/cache tmp/sockets vendor/bundle public/system}

namespace :deploy do

jhjguxin

Install MySQL Database 5.5.37 on CentOS 6.5/5.10, Red Hat (RHEL) 6.5/5.10

1.change user

su

2.Install Remi repository

jhjguxin

chrome://inspect/#devices
localhost:8999

chrome://flags/#enable-devtools-experiments

http://www.html5rocks.com/en/tutorials/developertools/revolutions2013/?redirect_from_locale=zh
adb forward tcp:8999 localabstract:chrome_devtools_remote

http://stackoverflow.com/questions/3877027/jquery-callback-on-image-load-even-when-the-image-is-cached