<script>
var year=2016;
function runnian(year){
if (year%400==0) {return true;}else if (year%4==0&&year%100!=00) {return true;}else{
return false;
}
}
if (runnian(year)) {document.write("闰年")}else{document.write("不是闰年");}
</script>
html5闰年判断函数
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转载自www.cnblogs.com/houweidong/p/9197314.html
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