Javascript"周末"日期计算？

Question

是否有一个帮助程序库用于执行这些类型的日期计算,如在Rails中？

Date.today.end_of_week

Answer 1

功能没有内置,但您可以定义自己的:

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() );