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JavaScript notebook 2 - Coggle Diagram

- - - - must have function name for latter use
    - - function name can be omitted (lambda expression)
      - const result= function(a,b) {return a*b}
        
        const doMoreMath = (a=2, b=2) => a * b;
        
        but it override when functions are used
      - store function expression inside a CONST
      - Immediately Invoked Funtion Expression
  - - - method inside object, trỏ vào element của chính object đó
      - nested function: function inside a method
      - Function keyword can be hoisted to the global variable, use arrow funtion, see video 08_05
      - =>: No scope, only refer to the nearest scope
  - - - a = (x) { if (x<3) {return;})
- - - - if (!(id in tutorTimes)) {...}
- - - - ứng dụng add thêm item vào array
      - arr[arr.length] = nextItem
      - dynamic array
        
        assign vào một vị trí xa, non-continuous location
        
        arr[100]='new item'
        
        Tạo ra các empty/undefined items in between
  - - - shift = pop the first items
      - unshift = prepend items to first indeces
  - - - arr.forEach(function (item) {item = <li> item</li>
      - sort(): sort Uppercase before lower cases
- - - - <input type="number" name="${side}Length" **placeholder="New ${side} length">**
- - - - window object, document object, object within DOM
    - - type of event, to listen to
      - in quotation marks
      - listed in the MDN evens references
    - - inline anonymous funct or an external func
    - - advanced stuff
      - usually set to false