Difference between parameters and arguments

script.js

// The parameters are the aliases for the values that will be passed to the function. The arguments are the actual values.

var foo = function( a, b, c ) {}; // a, b, and c are the parameters when declaring the function 

foo( 1, 2, 3 ); // 1, 2, and 3 are the arguments when we pass in when we call the function