JavaScript function rest parameters

/**
 * Let's create sum function 
 * that will return sum of all parameters
 * */
 
 function sum(...args) {
     return args.reduce((total, current) => total + current);
 }
 
 console.log(sum(1,2,3));
 //Result:
 //6
 
 console.log(sum(10,5));
 //Result:
 //15
 
 console.log(sum(10,10,10,10,10));
 //Result:
 //50