Question

Possible Duplicate:
Is there a (built-in) way in JavaScript to check if a string is a valid number?

I am using JS in a riak map reduce job. I have a number I want to map and needs to be a number.

if I have a variable:

 var wp=sfggz5341&& or var=100

How can if test if number?

e.g.

if wp==Number:    
    OK 
else:    
    pass

Answer 1

You can use the typeof operator (see MDN for details):

var wp = "sfggz53141";
if (typeof wp === "number") {
    // number here
} else if (typeof wp === "string") {
    // string here
}