CODEWITHSUNDEEP
javascriptparameters
To Loen
To Loen

Reputation: 31

How do I run a function over and over by using parameters?

My case:

function randomLetter(){
    var random = letter[Math.floor(Math.random()*26)];
    return random; 
}

function randomWord(wordLength){
    var random = randomLetter() + randomLetter() + randomLetter();
    return random; 
}

How do I write a code that run the randomLetter() function x times using parametes.
Example: I write 3 in the parameter, and the function will give me three random letters.
So instead of writing randomLetter() + randomLetter() + randomLetter(), I will just write randomWord(3), and I will get three random letters.

Upvotes: 0

Views: 54

Answers (5)

Olian04
Olian04

Reputation: 6872

Yet another recursive solution: 

function randomLetter() {
  return ('qwertyuiopasdfghjklzxcvbnm')[Math.floor(Math.random()*26)];
}

function randomWord(wordLength) {
  return (wordLength > 0) ? (randomWord(wordLength - 1) + randomLetter()) : '';
}

console.log( randomWord(10) );

Upvotes: 0

TVASO
TVASO

Reputation: 501

You can use a for-loop:

function randomWord(x){

    var random = [];

    for(var a = 0; a < x; a++){
        random[a] = randomLetter();
    }

    return random.join("");
}

Upvotes: 0

Stefan Ladwig
Stefan Ladwig

Reputation: 589

For this you could use a for loop like:

function randomWord(wordLength){
  var random =''
  for (var i = 0, i<wordLength, i++) {
    random += randomLetter();
  }
  return random; 
}

the first parameter in the parentheses after the 'for' keyword initializes the i variable with 0. The next value i<wordLength is the stop condition, which will test at the beginning of each run if the condition is still true, otherwise it will stop looping. The third i++ is what runs every time a loop finishes, in this case it increments i by one, which is identical to i = i + 1.

here is some more information: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Loops_and_iteration

Upvotes: 0

theGleep
theGleep

Reputation: 1187

Or recursion:

var letters = "abcdefghijklmnopqrstuvwxyz"
function randomLetter() {
  return letters.charAt(Math.floor((Math.random() * 100)) % letters.length)
}

function getLetters(count) {
  if (count-- < 1) return "";
  return getLetters(count) + randomLetter() + ","
}

document.getElementById("output").innerText = getLetters(4)
<div id="output" />

Upvotes: 0

Lucas
Lucas

Reputation: 423

Another approach, which buffers each letter into an array and returns the joined array.

function randomWord(wordLength){
    var letters = [];

    for (var i = 0; i < wordLength; i++) {
        letters.push(randomLetter());
    }

    return letters.join("");
}

Upvotes: 1

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