Welcome to collectivesolver - Programming & Software Q&A. A website you can trust. All programs tested and works. Contact: aviboots(AT)netvision.net.il
Bonsai Boy of New York Bonsai Trees and Accessories

BlueHost Web Hosting

Liquid Web iThemes WordPress Hosting

Ecommerce Software - Best Ecommerce Platform Made for You - Free Trial

DreamHost Web Hosting


getResponse autofunnels

Liquid Web Cloud VPS Hosting

11,407 questions

15,557 answers

573 users

How to check if a variable value is not a number (NaN) in JavaScript

1 Answer

0 votes
function is_number(n) {  
    if (isNaN(n)) {  
        return "Not a number";  
    }  
    return "A number";  
}  

document.write(is_number(8374) + "<br />");  
document.write(is_number('15') + "<br />");  
document.write(is_number('F16') + "<br />");  


/*
run:
 
A number
A number
Not a number

*/

 




answered Oct 8 by avibootz
...