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How to create a password generator with JavaScript?

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Sometimes, we want to create a password generator with JavaScript.

In this article, we’ll look at how to create a password generator with JavaScript.

How to create a password generator with JavaScript?

To create a password generator with JavaScript, we can get random characters from a string.

For instance, we write

const generatePassword = () => {
  const length = 8;
  const charset =
    "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
  const retVal = "";
  for (let i = 0, n = charset.length; i < length; ++i) {
    retVal += charset.charAt(Math.floor(Math.random() * n));
  }
  return retVal;
};

to define the generatePassword function.

In it, we loop i from 0 to length - 1 with a for loop.

In the loop, we get a random character from the charset string with

charset.charAt(Math.floor(Math.random() * n))

We use Math.floor(Math.random() * n) to get a random number between 0 and charset.length.

And we append the selected character to the retVal string.

Then we return the string after the loop is done.

Conclusion

To create a password generator with JavaScript, we can get random characters from a string.

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