https://github.com/martinheidegger/kof2015

Notes for k-of2015
https://github.com/martinheidegger/kof2015

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Notes for k-of2015

• Host: GitHub
• URL: https://github.com/martinheidegger/kof2015
• Owner: martinheidegger
• Created: 2015-11-06T06:44:56.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2015-11-06T07:14:33.000Z (almost 9 years ago)
• Last Synced: 2023-03-22T19:07:24.029Z (over 1 year ago)
• Language: JavaScript
• Size: 0 Bytes
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: Readme.md

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README

        
# Node.js at Kansai Open Forum 2015

## node cli

### Start simple: make sure you have a recent version.

```

$ node -v

```

### With the -e option we can run JavaScript right as a command

```

$ node -e "console.log(\"Hello World\")"

```

### With -p its possible to directly print the value

```

$ node -p "'Hello World'"

```

### Of course other operations work as well

```

$ node -p "1 + 1"

```

### REPL

``

$ node

> 1 + 1

Note: Repl is a module! https://nodejs.org/api/repl.html

### Piping

$ echo "1 + 1" | node -p

### As a file

$ echo "console.log(1 + 1)" > 01-cli/script.js

  node 01-cli/script.js

### As a script 

```bash

$ chmod +x 01-cli/bin; 01-cli/bin

```

#### Windows

Command lineにこのコマンドで.binがつかられます。

```PowerShell

> notepad 01-cli/bin.cmd 

```

Enter the following code

```

@node "%~dp0bin" %*

```

## Process details

### Run forever using setInterval

By default node shuts down immediately. To run forever we need to give it something to do:

```

$ node 02-process/01-forever.js

```

### Run forever by adding event listener

You can also just keep the stdin open and we will wait and wait.

```

$ node 02-process/02-resume.js

```

### It is furthermore possible that a native module keeps the thread alive.

```

$ node 02-process/03-native-module.js

```

### An error stops the process

```

$ node 02-process/04-error.js

```

It doesn't matter if the error is accidental or deliberate

```

$ node 02-process/05-deliberate-error.js

```

### You can catch those errors

```

$ node 02-process/06-catch-error.js

```

## NPM

### Install a global package

```

$ npm install coffee-script g

```

### Install a local package

```

$ npm install async

```

### Semver

[semver is important](http://semver.org/lang/ja/)

```

^1.1.0

~1.1.0

1.x

1.2.x

```

[try here](http://semver.npmjs.com/)

### Look at the package.json

```

```

### Edit the global package using EDITOR

### create a own package.json

### reference to module using 

### install a package by defining a dependency

... add ...

```

"dependency": {

	"async": "1.x"

}

```

## Packages

## require

```

$ require('async')

```

## require local

```

$ 

```

### express

### leveldb

## Debugging

### console log

### Error stack

### node debug

### node inspector

## NPM ++

### Specify scripts

### Publishing

## CLI ++