function getNowFormatDate() {
  var date = new Date();
  var seperator1 = "/";
  var year = date.getFullYear();//年
  var month = date.getMonth() + 1;//月
  var strDate = date.getDate(); //日
  if (month >= 1 && month <= 9) {
    month = "0" + month;
  }
  if (strDate >= 0 && strDate <= 9) {
    strDate = "0" + strDate;
  }
  var currentdate = year + seperator1 + month + seperator1 + strDate;
  return currentdate;
}
function startTime(){
var xiaoshi = getNowFormatDate()
var today = new Date();
var h = today.getHours();
var m = today.getMinutes();
var s = today.getSeconds();
m = checkTime(m);
s = checkTime(s);
document.getElementById("timetxt").innerHTML = xiaoshi + \' \' + h + ":" + m + ":" + s;
}
startTime();
function checkTime(i){
if(i<10){
i = "0"+i;
}
return i;
}

  

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本文链接:https://www.cnblogs.com/fdxjava/p/13518366.html