I just need explanation at the function part

Question

Here is my code but i don't know how this function is executed. I just need explanation

let num = [5,300,4,2,100,1];
function myFunc(){
num.sort((a,b)=>{return a-b});
console.log(num);
}
myFunc()

Answer 1

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort