如何创建一个5秒的倒计时计时器,jquery以登录弹出窗口结尾？

var counter = 0;
var interval = seTinterval(function() {
    counter++;
    // Display 'counter' wherever you want to display it.
    if (counter == 5) {
        // Display a login Box
        clearInterval(interval);
    }
},1000);