計(jì)算從現(xiàn)在到今年五一放假還有多少天（保留三位）？或者一共多少小時(shí)（保留三位小數(shù)）？
慕標(biāo)8001392
2018-04-18 15:28:40
1 回答
sherryliu
TA貢獻(xiàn)5條經(jīng)驗(yàn) 獲得超1個(gè)贊
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script>
// 現(xiàn)在的日期
var nowadays=new Date(),
? ? nowTime=nowadays.getTime();
// 五月一日零點(diǎn)
var future=new Date();
future.setFullYear(2018,4,1);
future.setHours(0,0,0,0);
var futureTime=future.getTime();
// 時(shí)間差
var days=parseFloat((futureTime-nowTime)/1000/60/60/24);
var hours=parseFloat((futureTime-nowTime)/1000/60/60);
// 保留三位小數(shù)
function decimal(num){
var fnum=num-parseInt(num);
var inum=Math.round(fnum*1000);
var integer=parseInt(num)+inum/1000;
return integer;
}
var finalDays=decimal(days);
var finalHours=decimal(hours);
// 打印結(jié)果，注意四舍五入
console.log(finalDays);
console.log(finalHours);
console.log(days);
console.log(hours);
</script>
</body>
</html>
添加回答
舉報(bào)
0/150
提交
取消