what is truthy value in javascript code example

Example 1: Truthy and Falsy js

//Checking truthy and falsy value

function truthyOrFalsy (val) { 
    if(val) {
      return true
    } else {
      return false
    }
}

console.log(truthyOrFalsy(0)) // print false
console.log(truthyOrFalsy(5)) // print true

Example 2: javascript truthy

// Truthy values:

// All values are truthy, BUT (excluding) the following:
0
''
undefined
null
NaN