`valueAsNumber` shim for Internet Explorer 11

valueAsNumber.js

(function () {
    
    /* Internet Explorer 11 may have trouble retrieving the number type
    of an input value. This short script performs a quick test, and repairs
    the functionality if necessary. Load before attempting to use the
    `valueAsNumber` property on input elements. */

    "use strict";

    var a = document.createElement( "input" );

    a.setAttribute( "type", "number" );
    a.setAttribute( "value", 2319 );

    if ( "valueAsNumber" in a && a.value != a.valueAsNumber ) {
        if ( "defineProperty" in Object && "getPrototypeOf" in Object ) {
            Object.defineProperty( Object.getPrototypeOf( a ), "valueAsNumber", {
                get: function () { return parseInt( this.value, 10 ); }
            });
        }
    }

}());

IE 10 as well btw

I'd suggest using parseFloat() if you need to deal with non-integers.

This works great. Now I will go to the local court house and legally change all my kids' names to 'Jonathan Sampson.' You rock.