Introdution

1. NoSQL
2. Open Source
3. No Need For ORM( Object Relational Mapping)
4. Document(Record)

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note of You Don’t know JS

Data types in Javascript

// Javascript has 6 primitive data(immutable) types
typeof 3.14  // 'number';
typeof 'bla'  // 'string';
typeof true  // 'boolean'
typeof Symbol.iterator  // 'symbol'
typeof undefined  // 'undefined'
typeof null  // 'object'

// and object
typeof {a:1}  // 'object'
typeof function fn(){}  // 'function', it's in fact an object with special type tag


// object has sub type
Object.prototype.toString.call(fn)  // '[object Function]'

// primitive types have object equivalent that wrap around them.
Object.prototype.toString.call(3.14)  // '[object Number]'
Object.prototype.toString.call('bla')  // '[object String]'
Object.prototype.toString.call(true)  // '[object Boolean]'
Object.prototype.toString.call(Symbol.iterator)  // '[object Symbol]'

Object.prototype.toString.call({})  // '[object Object]'
Object.prototype.toString.call([])  // '[object Array]'
Object.prototype.toString.call(/[a-zA-Z]+/)  // '[object RegExp]'

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Basic

<div id="app">
  {{ message }}
</div>

var app = new Vue({
  el: '#app',
  data: {
    message: 'Hello Vue!'
  }
})

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Motivation or Problems

• There are multiple standards of module system in JS world including CommonJS, AMD, ES6 modules and <script> tag style.
• There are two extremes when transferring modules
  1. one request per module
  2. All modules in one request
• Why should a module system only help the developer with JavaScript?

IO

Webpack is a module bundler.

It takes a bunch of files, treating each as a module, figuring out the dependencies between them, and bundle them into static assets that are ready for deployment.

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