What does math.floor function does in javascritp code example

Example 1: math.floor js

console.log(Math.floor(5.95));
// expected output: 5

console.log(Math.floor(5.05));
// expected output: 5

console.log(Math.floor(5));
// expected output: 5

console.log(Math.floor(-5.05));
// expected output: -6

Example 2: math floor javascript

// positive
console.log(Math.floor(7.25));   // 7
console.log(Math.floor(0.99));   // 0

// negative
console.log(Math.floor(-2.1));   // -3
console.log(Math.floor(-9.5));   // -10

// objects, strings, functions
console.log(Math.floor("hello"));                     // NaN
console.log(Math.floor({name: 'John', age: '25'}));   // NaN
console.log(Math.floor(console.log));                 // NaN