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JavaScript Asynchronous Programming with JavaScript Understanding Promises Create a Promise

Posted by Edelweiss Villoria
Edelweiss Villoria
4,801 Points

What's a parameter?

Could you just give me a quick overview?

1 Answer

Brandon White
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Brandon White
Full Stack JavaScript Techdegree Graduate 34,660 Points
Brandon White
.a{fill-rule:evenodd;}techdegree seal-36
Brandon White
Full Stack JavaScript Techdegree Graduate 34,660 Points

Hi Edelweiss,

A parameter is the part of a function definition that represents the unknown input to that function.

So in the following:

function squareNum(num) {
    return num * num
}
// the num variable is a parameter

console.log(squareNum(5)) // 5 is the argument

Parameters and arguments are closely related, but the parameter is the variable that you’re using to represent the argument that will later be passed in.