BOM-做个万年历

首先，注意：

1、延迟执行     window.setTimeout(    ,     )     里面的时间是以毫秒计算的

2、间隔执行    window.setInterval(     ,     )

3、清除    window.clearInterval(       )

function wnl() {

var time = new Date();
var year = time.getFullYear();
var month = time.getMonth() + 1;
var day = time.getDate();
var hour = time.getHours();
var min = time.getMinutes();
var sec = time.getSeconds();
var time_str = year + "年" +
month + "月" +
day + "日" +
"   " +
hour + ":" +
min + ":" +
sec;
document.getElementById("time").innerHTML =
time_str;
}

var x = window.setInterval("wnl()", 1000);