JavaScript study notes (3) Code to display the current time_Basic knowledge

The html code is as follows:

Copy code The code is as follows:

The javascript code is as follows: The time display format is: 2011-04-04 Tuesday 12:09:34

Copy code The code is as follows:

function startTime() {
try{
var today = new Date();
var year = today.getFullYear();
var month = checkNum(today.getMonth() 1);
var date = checkNum(today.getDate());
var day = today.getDay();
var hour = checkNum(today.getHours());
var minute = checkNum(today.getMinutes());
var second = checkNum(today.getSeconds());
switch( day) {
case 1:
day = "一";
break;
case 2:
day = "二";
break;
case 3:
day = "三";
break;
case 4:
day = "四";
break;
case 5:
day = "五";
break;
case 6:
day = "六";
break;
case 7:
day = "日";
break;
}
var fullTime = year "-" month "-" date " " "week" day " " hour ":" minute ":" second;
document.getElementById("showTime").innerHTML = fullTime;
setInterval ('startTime()', 1000);
}catch(e) {
alert(e.description);
}
}
function checkNum(num) {
if (num<10) {
num = "0" num;
}
return num;
}