Use js to display the current system time

      //定义函数：构建要显示的时间日期字符串 function showTime() { //创建Date对象 var today = new Date(); //分别取出年、月、日、时、分、秒 var year = today.getFullYear(); var month = today.getMonth()+1; var day = today.getDate(); var hours = today.getHours(); var minutes = today.getMinutes(); var seconds = today.getSeconds(); //如果是单个数，则前面补0 month = month<10 ? "0"+month : month; day = day <10 ? "0"+day : day; hours = hours<10 ? "0"+hours : hours; minutes= minutes<10 ? "0"+minutes : minutes; seconds= seconds<10 ? "0"+seconds : seconds; //构建要输出的字符串 varstr = year+"年"+month+"月"+day+"日 "+hours+":"+minutes+":"+seconds; //获取id=result的对象 varobj = document.getElementById("result"); //将str的内容写入到id=result的
中去 obj.innerHTML = str; //延时器 window.setTimeout("showTime()",1000); }   #result{ width:500px; border:1px solid #CCCCCC; background:#FFFFCC; margin:50px auto; font-size:24px; color:#FF0000; padding:20px; }