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is.true

is.true(target: unknown)​

The is.true method is used to determine whether a given value is equal to the boolean true. It returns true if the value is equal to true, and false otherwise.

Specification​

  • Target argument: required.
  • Checks if the given "target" type is true.

Information​

  • Unit tests: ✅

Examples​

is.true(true) // true
is.true(new Boolean(1)) // true
is.true(new Boolean(-1)) // true

is.true(false) // false
is.true(new Boolean(0)) // false
is.true(new Boolean()) // false
is.true(0) // false
is.true('') // false
is.true({}) // false
is.true([]) // false
// And all other known types will return false

Reversal boolean result​

is.not_true(true) // false
is.not_true(new Boolean(1)) // false
is.not_true(new Boolean(-1)) // false

is.not_true(false) // true
is.not_true(new Boolean(0)) // true
is.not_true(new Boolean()) // true
is.not_true(0) // true
is.not_true('') // true
is.not_true({}) // true
is.not_true([]) // true
// And all other known types will return true