JavaScript default parameters

Since es6 its possible to include default function parameters just like other programing languages such as php do,

default parameters cut down the need to initially set default Parameters within the code as;

const vec function (x, y){

    if(typeof x == "undefined")

    x = 0;

if(typeof y == "undefined")

    y = 0;

    return {

        x, y

    }

}

now the above can be done in a more simple way , using default parameters as;

const vec function (x = 0, y = 0){
    return {

        x, y

    }

}

In either of the functions if you omit either of the Parameters your parameter will default to zero ie 0;