[Javascript]特定时间执行某个函数

window.setInterval(function() {
            var refreshHours = new Date().getHours();
            var refreshMin = new Date().getMinutes();
            var refreshSec = new Date().getSeconds();
            if (refreshHours == '0' && refreshMin == '0' && refreshSec == '0') {
                alert('我刷新了哟')
            }
        }, 1000);