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JavaScript

Posted by Joey Frazer
Joey Frazer
Courses Plus Student 129 Points

How does this code work?

How does this unlimited arguments code work? Is there another way?

   function greetAll() {
        var i;
        for(i = 0; i < arguments.length; i++) {
            document.write("Hi " + arguments[i] +"!" + "<br>");
        }
    }
   greetAll("Mary","John", "Peter");

1 Answer

Steven Parker
Steven Parker
243,656 Points
Steven Parker
Steven Parker
243,656 Points

:point_right: JavaScript functions have a built-in object called the arguments object.

The argument object contains an array of the arguments used when the function was called (invoked). Like any array, it can be indexed, and it contains a length property.

I'm not sure what you mean by "another way".

Joey Frazer
Joey Frazer
Courses Plus Student 129 Points

Another way. I figured out in ES6 you can do

function hello(... items){
    items.forEach(function(item) {
      console.log(item)
    });
  }