JavaScript_Succinctly

Chapter 5 Boolean()
Conceptual overview of using the Boolean() object
The Boolean() constructor function can be used to create Boolean objects, as well as
Boolean primitive values, that represent either a true or a false value.
In the following code, I detail the creation of Boolean values in JavaScript.
Sample: sample52.html
// Create a Boolean object using the new keyword and the Boolean()
constructor.
var myBoolean1 = new Boolean(false); // Using new keyword.
console.log(typeof myBoolean1); // Logs 'object'.
// Create a Boolean literal/primitive by directly using the number
constructor without new.
var myBoolean2 = Boolean(0); // Without new keyword.
console.log(typeof myBoolean2); // Logs 'boolean'.
// Create Boolean literal/primitive (constructor leveraged behind the
scenes).
var myBoolean3 = false;
console.log(typeof myBoolean3); // Logs 'boolean'.
console.log(myBoolean1, myBoolean2, myBoolean3); // Logs false false
false.
Boolean() parameters
The Boolean() constructor function takes one parameter to be converted to a Boolean
value (i.e. true or false). Any valid JavaScript value that is not 0, -0, null, false,
NaN, undefined, or an empty string ("") will be converted to true. In the following
sample, we create two Boolean object values: One true and one false.
Sample: sample53.html
// Parameter passed to Boolean() = 0 = false, thus foo = false
var foo = new Boolean(0)
console.log(foo);
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