IE8 Date.prototype.toISOString support.js

ie8.date.toisostring.js

// https://gist.github.com/fonji/863b961ab83ae35c98fe
// From http://stackoverflow.com/questions/12907862/ie8-date-compatibility-error
if ( !Date.prototype.toISOString ) {
    (function() {
        function pad(number) {
            var r = String(number);
            if ( r.length === 1 ) {
                r = '0' + r;
            }
            return r;
        }
        Date.prototype.toISOString = function() {
            return this.getUTCFullYear()
                + '-' + pad( this.getUTCMonth() + 1 )
                + '-' + pad( this.getUTCDate() )
                + 'T' + pad( this.getUTCHours() )
                + ':' + pad( this.getUTCMinutes() )
                + ':' + pad( this.getUTCSeconds() )
                + '.' + String( (this.getUTCMilliseconds()/1000).toFixed(3) ).slice( 2, 5 )
                + 'Z';
        }
        Date.prototype.toJSON = Date.prototype.toISOString;
    }() );
}