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double logical not javascript Code Example
double logical not javascript 
n1 = !!true                   // !!truthy returns true
n2 = !!{}                     // !!truthy returns true: any object is truthy...
n3 = !!(new Boolean(false))   // ...even Boolean objects with a false .valueOf()!
n4 = !!false                  // !!falsy returns false
n5 = !!""                     // !!falsy returns false
n6 = !!Boolean(false)         // !!falsy returns false
double and operator javascript 
condition && ifTrue



Javascript

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 Code Example
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