In JavaScript, you can pass multiple arguments to a function or method by separating them with commas. Here's an example function that takes two arguments and returns their sum:
function sum(a, b) {
return a + b;
}
console.log(sum(2, 3)); // Output: 5
Here, sum takes two arguments a and b, and returns their sum. When we call sum(2, 3), it returns 5.
You can also pass any number of arguments to a function using the arguments object. Here's an example function that adds any number of arguments:
function add() {
let sum = 0;
for (let i = 0; i < arguments.length; i++) {
sum += arguments[i];
}
return sum;
}
console.log(add(1, 2, 3, 4)); // Output: 10
Here, add can accept any number of arguments. Inside the function, we iterate over the arguments object to add up all the values. When we call add(1, 2, 3, 4), it returns 10.
You can also use the spread operator (...) to pass an array of arguments to a function. Here's an example:
function multiply(a, b, c) {
return a * b * c;
}
let arr = [2, 3, 4];
console.log(multiply(...arr)); // Output: 24
Here, we define a function multiply that takes three arguments a, b, and c, and returns their product. We create an array arr with three values [2, 3, 4]. Then, we use the spread operator to pass the array as separate arguments to the multiply function. When we call multiply(...arr), it returns 24.