## jQuery.isNumeric( value )Returns: Boolean

Description: Determines whether its argument represents a JavaScript number.

- #### version added: 1.7 jQuery.isNumeric( value )

  - value
    Type: Anything
    The value to be tested.

The `$.isNumeric()` method checks whether its argument represents a numeric value. If so, it returns `true`. Otherwise it returns `false`. The argument can be of any type.

As of jQuery 3.0 `$.isNumeric()` returns `true` only if the argument is of type `number`, or if it's of type `string` and it can be coerced into finite numbers. In all other cases, it returns `false`.

## Example:

Sample return values of $.isNumeric with various inputs.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
    // true (numeric)$.isNumeric( "-10" )$.isNumeric( "0" )$.isNumeric( 0xFF )$.isNumeric( "0xFF" )$.isNumeric( "8e5" )$.isNumeric( "3.1415" )$.isNumeric( +10 )$.isNumeric( 0144 ) // false (non-numeric)$.isNumeric( "-0x42" )$.isNumeric( "7.2acdgs" )$.isNumeric( "" )$.isNumeric( {} )$.isNumeric( NaN )$.isNumeric( null )$.isNumeric( true )$.isNumeric( Infinity )$.isNumeric( undefined )