js计算闰年方法

计算闰年方法：

function leapyear()

{

var now = new Date();

var years = now.getFullYear(document.form1.textfield.value);

var str;

var years = document.form1.textfield.value;

var result =(years%4==0 && years%100!=0)||(years%400==0)?years+"是闰年":years+"不是闰年";

document.form1.textfield2.value = result;

}

转载于:https://blog.51cto.com/shenjinchen/1317207