A JavaScript Boolean represents one of two values: true or false. Boolean values are generally the result of comparisons you make in your JavaScript programs.
a===5
This code tests to see whether the value of the variable a is equal to the number 4. If it is, the result of this comparison is the boolean value true. If a is not equal to 4, the result of the comparison is false.
If the value is 0, -0, null, false, NaN, undefined, or the empty string (""), the object has an initial value of false. Everything except this value is considered as a true value.
Boolean values can also be useful for comparison. It returns true or false values.
let a=5 , b=10;
let result=a>b;
console.log(result); //Output : false
let result1=a<b;
console.log(result1); //Output : true
Boolean() Function - we can also use the boolean function to find out whether it is true or not.
let x = null;
console.log(Boolean(x)); //Output : false
We can also use logical OR and And operators with boolean values.
const a = 'abc';
const b = false;
const c = true;
const d = 0
const e = 6
const f = 9
const g = null
console.log(a || b); // Output :"abc"
console.log(c || a); // Output :true
console.log(b || a); // Output :"abc"
console.log(e || f); // Output : 6
console.log(f || e); // Output :9
console.log(d || g); // Output :null
console.log(g || d); // Output :true
console.log(a && c); // Output :"abc"
As you can see, the or operator checks the first operand. If this is true it returns it immediately If it is not true it returns the second operand.
