Question

Possible Duplicate:
How do I Convert a String into an Integer in JavaScript?

Given the following code:

var n = '1';
var x = n + 2;

x is set to “12”.

Assuming I cannot change the value of n, what the most efficient way to have x set to 3?

Is it necessary to use parseInt() here? Or is there a way to have JavaScript automatically treat the digit as a number?

Answer 1

parseInt(n,10) would work. You can also do n^0 as a shortcut. In fact, there are several such shortcuts available, but parseInt is “best” because it’s more obvious to a human reader.