Question

In JavaScript, I may have a random number generated, that may be 3,123, or 3,001, or 2790, etc.. Which JavaScript method will help me out in returning a target whole integer because these values…

3,123, or 3,001, or 2790 are closer to 3000, rather than 4000 or 2000, or 1000.

Thanks for any advice.

Answer 1

Try:

var rand_num = Math.floor(Math.random() * 10000);
Math.round((rand_num) / 1000) * 1000;

If rand_num is 3123, 3001 or 2790, it will be reduced to either 3.123, 3.001 and 2.729 respectively, rounded to 3.0 and multiplied to become 3000.