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javascriptgoogle-chromemozilla

getRandomInt always returns 0

I am using the function from developer.mozilla.com

console.log(getRandomInt(1));

function getRandomInt(max) {
  return Math.floor(Math.random() * Math.floor(max));
}

I need it to only be 1 or 0.

If I call the above script in the chrome developer console, then I always get "undefined"

enter image description here

Solution

  • The reason behind this behavior is Math.floor(). From the documentation:

    The Math.floor() function returns the largest integer less than or equal to a given number.

    Source: Math.floor()

    What you need to use to make it work as per your requirement is Math.round(). As the documentation states:

    The Math.round() function returns the value of a number rounded to the nearest integer.

    Source: Math.round()

    Please find this example below:

    console.log(getRandomInt(1));

function getRandomInt(max) {
   const random = Math.random() * max;
   return Math.round(random);
}

    Hope this helps!

    Addition:

    And as @Kaiido mentioned you have an active filter with the value name. If you remove that you will see the value.