// Get the current date
today = new Date();

// Create a Date object for Christmas of the current year
var wed = new Date(today.getFullYear(), 9, 14);

// Check if the current date is after December 25th
if (today.getMonth() == 9 && today.getDate() > 14) {
    // If true, set Christmas for the next year
    wed.setFullYear(wed.getFullYear() + 1);
}  

// Calculate the difference in days between today and Christmas
var one_day = 1000 * 60 * 60 * 24;

// Log the number of days left until Christmas to the console
"IN " +
console.log(Math.ceil((cmas.getTime() - today.getTime()) / (one_day)) +
    " DAYS!");