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