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javascript type check

Type Checks

  • String: typeof object === "string"
  • Number: typeof object === "number"
  • Boolean: typeof object === "boolean"
  • Object: typeof object === "object"
  • Plain Object: jQuery.isPlainObject( object )
  • Function: jQuery.isFunction( object )
  • Array: jQuery.isArray( object )
  • Element: object.nodeType
  • null: object === null
  • null or undefined: object == null
  • undefined:
    • Global Variables: typeof variable === "undefined"
    • Local Variables: variable === undefined
    • Properties: object.prop === undefined

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