setinterval倒数计时无法正常工作

Question

I have js countdown function

var sTime = new Date().getTime();
var countDown = 60;

function RefreshThePage() {
var cTime = new Date().getTime();
var diff = cTime - sTime;
var seconds = countDown - Math.floor(diff / 1000);
if (seconds === 0) {
    location.reload(true);
}
if (seconds >= 0) {
    var minutes = Math.floor(seconds / 60);
    seconds -= minutes * 60;
    $("#minutes").text(minutes < 10 ? "0" + minutes : minutes);
    $("#seconds").text(seconds < 10 ? "0" + seconds : seconds);
} else {
    $("#countdown").hide();

    clearInterval(counter);
}
}

and in html side , I call this

 RefreshThePage();
           var counter = setInterval(RefreshThePage, 1000);

the issue is , normally it should refresh the page in 60 seconds but this code refreshs the page in 30 seconds. I don't know where the problem is ..

Answer 1

I resolved the issue

I forgot this html meta tag in somewhere in ui side

<meta http-equiv="refresh" content="30" />