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JavaScript Boolean (Boolean) Object

Boolean (Boolean) object is used to convert non-Boolean value to a Boolean value (true or false).


Examples

Online examples

Check Boolean value
Check the Boolean object is true or false.


Complete Boolean (Boolean) Object Reference

We provide JavaScript Boolean Object Reference Manual , including all properties and methods that can be used in a Boolean object.

The manual contains a detailed description and relevant examples for each of the properties and methods.


Creating Boolean objects

Boolean objects represent two values: "true" or "false"

The following code defines the Boolean object called myBoolean of:

var myBoolean=new Boolean();

If no initial value of the Boolean object or its value:

  • 0
  • -0
  • null
  • ' "
  • false
  • undefined
  • NaN

Then the object is false. Otherwise, its value is true (even when the value of the string variable is "false")!