Javascript "end of week"日期计算？

Question

是否有像 Rails 中那样进行这些类型的日期计算的辅助库？

Date.today.end_of_week

Answer 1

没有内置函数，但您可以定义自己的函数:

Date.prototype.endOfWeek = function(){
  return new Date( 
      this.getFullYear(), 
      this.getMonth(), 
      this.getDate() + 6 - this.getDay() 
  );
};

var now = new Date();

// returns next saturday; and returns saturday if it is saturday today.
console.log( now.endOfWeek() );