Boolean type in JavaScipt

09 Sep 2014

Boolean is a primitive data type, but you can create a boolean object using Boolean constructor function by newing it:

// Case 1: using New operator
var a = new Boolean(false);
var result = a && true;

console.log(result);        // true 
console.log(a);             // Boolean {[[PrimitiveValue]]: false}

// Case 2: Using Casting operator
var b = Boolean(false);
var result = b && true;

console.log(result);        // false
console.log(b);             // false