Question

How to use function with dynamic number of parameters in JavaScript ES6

Answer 1

function f(...args) {
    console.log("arguments.length = ", arguments.length);
    for (const arg of args) {
        console.log("arg = ", arg);
    }
    console.log();
}

f();
f(989);
f(87, 99);
f(1, 2, 3, 4);


     
/*
run:
   
arguments.length =  0

arguments.length =  1
arg =  989

arguments.length =  2
arg =  87
arg =  99

arguments.length =  4
arg =  1
arg =  2
arg =  3
arg =  4
 
*/

 

70+ SQL courses for beginners and professionals