Get next date from weekday in JavaScript

Question

How can one return the next date of a given weekday (it could be either a number 0-6 or names Sunday-Saturday).

Example, if today, on Friday 16-Oct-2009 I passed in:

• Friday, it would return today's date 16-Oct-2009
• Saturday returns 17-Oct-2009
• Thursday returns 22-Oct-2009

Answer 1

Just adding 7 doesn't solve the problem.

The below function will give you the next day of the week.

function nextDay(x){     var now = new Date();         now.setDate(now.getDate() + (x+(7-now.getDay())) % 7);     return now; } 

Answer 2

Here's a slightly modified version to Tim's answer to address the specific question-- pass in a date d, and, and a desired day of week (dow 0-6), return the date

function nextDay(d, dow){     d.setDate(d.getDate() + (dow+(7-d.getDay())) % 7);     return d; }