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Michaela Pecot
5,364 Pointshow is a parameter different from an argument?
when I look up the definition of parameter in javascript, it just seems to be the variable passed into a function, which is what I thought an argument was. I am wondering what the difference is between the two.
1 Answer
Steven Parker
231,269 PointsThe difference is a bit subtle. A parameter is the name you use in the function definition as a placeholder for the values that will be passed later when the function is called. It's essentially a variable but you don't have to declare it.
On the other hand, an argument is a value that you pass when you make the call. For example:
function sum(a, b) { // <-- "a" and "b" are both parameters
return a + b;
}
total = sum(price, tax); // <-- "price" and "tax" are both arguments