JavaScript获取系统当前日期和时间、星期几

JavaScript获取系统当前日期和时间、星期几

方法一：

<script language="javascript">

var mydate=new Date();

var myyear=mydate.getYear();

var mymonth=mydate.getMonth()+1;//注：月数从0~11为一月到十二月

var mydat=mydate.getDate();

var myhours=mydate.getHours();

var myminutes=mydate.getMinutes();

var myseconds=mydate.getSeconds()

var myday=mydate.getDay()//注:0-6对应为星期日到星期六

var xingqi

switch(myday)

{

case 0:xingqi="星期日";break;

case 1:xingqi="星期一";break;

case 2:xingqi="星期二";break;

case 3:xingqi="星期三";break;

case 4:xingqi="星期四";break;

case 5:xingqi="星期五";break;

case 6:xingqi="星期六";break;

default:xingqi="系统错误！"

}

document.write("现在的时间是：")

document.write("<br>")

document.write(""+myyear+"年"+mymonth+"月"+mydat+"日");

document.write("<br>")

document.write(""+myhours+"时"+myminutes+"分"+myseconds+"秒");

document.write("<br>")

document.write(xingqi)

</script>

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方法二：

（自定义函数法，然后调用）

<script language="javascript">

function xingqi()

{

var a=new Date()

var myxingqi=a.getDay()

var b

switch(myxingqi)

{

case 0:b="星期日";break;

case 1:b="星期一";break;

case 2:b="星期二";break;

case 3:b="星期三";break;

case 4:b="星期四";break;

case 5:b="星期五";break;

case 6:b="星期六";break;

default:b="系统错误，无法读取日期！";

}

document.write(b)

}

xingqi()

</script>

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方法三：（数组方法）

<script language="javascript">

var a=new Date()

var myxingqi=a.getDay()

var b=new Array()

b[0]="星期日";

b[1]="星期一";

b[2]="星期二";

b[3]="星期三";

b[4]="星期四";

b[5]="星期五";

b[6]="星期六";

document.write(b)

</script>

或者

<script language="javascript">

var a=new Date()

var myxingqi=a.getDay()

var b=new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六")

document.write(b)

</script>