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JavaScript JavaScript Functions Arrow Functions Function Challenge

Posted by ja5on
ja5on
10,338 Points

how to call a parameter / or get a result from it?

https://w.trhou.se/ljl809rvml

I know the code isn't working, stuck on how to return a value from parameters.

2 Answers

beverlygrant
.a{fill-rule:evenodd;}techdegree
beverlygrant
Full Stack JavaScript Techdegree Student 5,674 Points

You are using console.log(lower); Here lower is a variable of function getMyRand. Which is limiting its scope and you can't directly use that value from outside the function.

An Example of Function which Arguments and Parameter.

function iAmAfunction(parameter){
   return parameter * parameter; //returning a value
}

let squareofNum = iAmAfunction(5); //5 is an argument
console.log(squareofNum);

I would highly recommend you to start the function lectures again to understand the basic terminology.

ja5on
ja5on
10,338 Points

Yes i will do (i have some holes in my knowledge) thanks for your response

Diego Alvarez
Diego Alvarez
6,680 Points

But that doesn't answer his question, because he's trying to log to the console the value of the parameters, dynamically.

For example: document.querySelector('main').innerHTML = `The random number between ${lower} and ${upper} is ${randomNumber(1,100)}`;

I'm trying to figure it out as well, but I believe it's possible only with callbacks, or I'm too asleep at the moment haha.

This is what I'm trying according to your answer.

const randomNumber = (lower, upper) => {
  Math.floor(Math.random() * (lower - 1 + upper)) + 1;

  let numAssigned = randomNumber(1,100);

  let printResult = document.querySelector('main').innerHTML = `The random number between ${lower} and ${upper} is ${numAssigned}`;

  return printResult;
}

// Call the function and pass it different values
randomNumber();

Obviously it throws an error, which says > Uncaught RangeError: Maximum call stack size exceeded

Kylie Soderblom
Kylie Soderblom
3,890 Points
Kylie Soderblom
Kylie Soderblom
3,890 Points

Math.floor(Math.random() * (max - min) ) + min; Start with this. (max = upper, min = lower).