How to determine if this year is a leap year in javascript

Judgment method: 1. Use the "new Date().getFullYear()" statement to get the current year; 2. Use the "year%4==0&&year 0!=0" statement to determine whether the current year is Leap year. If true is returned, it is a leap year. If false is returned, it is not a leap year.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

javascript determines whether this year is a leap year

First we need to get the current year, we can use the Date object and getFullYear().

var myDate = new Date();
var Year = myDate.getFullYear();

//简写：
var Year = new Date().getFullYear();

Then determine whether the obtained year is a leap year.

A leap year is a year that is divisible by 4 but not divisible by 100.

Syntax:

year%4==0&&year%100!=0

If true is returned, it is a leap year, if false is returned, it is not a leap year.

Add an if statement to select output information.

if(year%4==0&&year%100!=0){
		   console.log(year+" 是闰年");
	   }else{
		   console.log(year+" 不是闰年");
	   }

OK, done!

Complete code:

var year=new Date().getFullYear();
if(year%4==0&&year%100!=0){
   console.log(year+" 是闰年");
}else{
   console.log(year+" 不是闰年");
}

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