会话超时 - 以分钟为单位的结果[重复]

Question

This question already has an answer here:

• Javascript seconds to minutes and seconds 23 answers

var IDLE_TIMEOUT = 2700; //seconds 45min

var _idleSecondsCounter = 0;
document.onclick = function() {
  _idleSecondsCounter = 0;
};
document.onmousemove = function() {
  _idleSecondsCounter = 0;
};

document.onkeypress = function() {
  _idleSecondsCounter = 0;
};
window.setInterval(CheckIdleTime, 1000);

function CheckIdleTime() {
  _idleSecondsCounter++;
  var oPanel = document.getElementById("SecondsUntilExpire");
  if (oPanel)
    oPanel.innerHTML = (IDLE_TIMEOUT - _idleSecondsCounter) + "";
  if (_idleSecondsCounter >= IDLE_TIMEOUT) {
    //alert("Your Session Time expired. Please Login.");
    document.location.href = "logoff.php";
  }
}

<div id='SecondsUntilExpire'></div>

So from above i am getting output as 2699 ( its in seconds = 45min ) and if no event happen its decrements ( 2698..2697..and so on ) and if any event (mouse up..etc ) happen its back to 2699

But i need in minutes thats : 44:59, 44:58 ..and so on

</div>

Answer 1

Here's how I'd code it to be readable

function CheckIdleTime() {
    _idleSecondsCounter++;
    var oPanel = document.getElementById("SecondsUntilExpire");
    var remain = IDLE_TIMEOUT - _idleSecondsCounter;
    var remainMinutes = Math.floor(remain / 60);
    var remainSeconds = ('0' + (remain % 60)).substr(-2);
    if (oPanel)
        oPanel.innerHTML = remainMinutes + ':' + remainSeconds; 
    if (_idleSecondsCounter >= IDLE_TIMEOUT) {
        //alert("Your Session Time expired. Please Login.");
        document.location.href = "logoff.php";
    }
}

uses

var remainSeconds = ('0' + (remain % 60)).substr(-2);

so that seconds are always two digits