How to toggle a boolean

Question

Is there a really easy way to toggle a boolean value in javascript   So far  the best I ve got outside of writing a custom function is the ternary   bool   bool   false   true

User · Answer

I was searching after a toggling method that does the same  except for an inital value of null or undefined  where it should become false    Here it is   booly     booly    false

User · Answer

bool   bool    true    One of the cases

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Let s see this in action    x000D   x000D  var b   true  x000D   x000D  console log b      true x000D   x000D  b    b  x000D  console log b      false x000D   x000D  b    b  x000D  console log b      true x000D   x000D   x000D    Anyways  there is no shorter way than what you currently have

User · Answer

bool     tool   bool   tool   if you want the value to hold true if tool  another boolean  has the same value

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In a case where you may be storing true   false as strings  such as in localStorage where the protocol flipped to multi object storage in 2009  amp  then flipped back to string only in 2011 - you can use JSON parse to interpret to boolean on the fly  this sidebar    JSON parse this sidebar

User · Answer

If you don t mind the boolean being converted to a number  that is either 0 or 1   you can use the Bitwise XOR Assignment Operator  Like so   bool    true      - toggle value     This is especially good if you use long  descriptive boolean names  EG   var inDynamicEditMode     true         Value is  true  boolean  inDynamicEditMode         true         Value is  0  number  inDynamicEditMode         true         Value is  1  number  inDynamicEditMode         true         Value is  0  number    This is easier for me to scan than repeating the variable in each line   This method works in all  major  browsers  and most programming languages

User · Answer

bool    bool    This holds true in most languages

[javascript] How to toggle a boolean?

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