integer length in javascript

Question

Stoopid question time!

I know that in JavaScript you have to convert the integer to a string:

var num = 1024;
len = num.toString().length;
console.log(len);

My question is this: Why is there no get length property for integers in JavaScript? Is it something that isn't used that often?

Answer 1

You can find the 'length' of a number using Math.log10(number)

var num = 1024;
var len = Math.floor(Math.log10(num))+1;
console.log(len);

or if you want to be compatible with older browsers

var num = 1024;
var len = Math.log(num) * Math.LOG10E + 1 | 0; 
console.log(len);

The | 0 does the same this as Math.floor.