How can I specify the base for Math.log() in JavaScript?

Question

I need a log function for JavaScript, but it needs to be base 10. I can\'t see any listing for this, so I\'m assuming it\'s not possible. Are there any math wiz

Answer 1

Math.log10 = function(n) {
    return (Math.log(n)) / (Math.log(10));
}

Then you can do

Math.log10(your_number);

NOTE: Initially I thought to do Math.prototype.log10 = ... to do this, but user CMS pointed out that Math doesn't work this way, so I edited out the .prototype part.