Jquery check if value is numeric

Question

I was wondering if anybody had a quick and dirty jquery method that will check if a value is numeric or not? I was thinking about using a regex type method to check the value, if not do not submit the form. I was using jquery validation, but I am running into issues just loading jquery validation.

I just have one value that I want to make sure is numeric.

Answer 1

Sure, use jQuery's isNumeric() function.

$.isNumeric("-10");  // true
$.isNumeric(16);     // true
$.isNumeric(0xFF);   // true
$.isNumeric("0xFF"); // true
$.isNumeric("8e5");  // true (exponential notation string)
$.isNumeric(3.1415); // true
$.isNumeric(+10);    // true
$.isNumeric(0144);   // true (octal integer literal)
$.isNumeric("");     // false
$.isNumeric({});     // false (empty object)
$.isNumeric(NaN);    // false
$.isNumeric(null);   // false
$.isNumeric(true);   // false
$.isNumeric(Infinity); // false
$.isNumeric(undefined); // false