[Cheat Sheet] Javascript – Variables

Note: This is part of Javascript learning roadmap.

  • declared with keyword var
  • are loosely type
    • a variable can hold any type of data at any time
    • type is inferred from the value
    • type is undefined  until a value is assigned
  • if they are declared without the ‘var’ keyword -> the value is global and can be accessed anywhere in the code !Not recommended

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