Jquery 获取当前时间日期

Jquery 获取当前时间日期代码如下：

<script type="text/javascript">

    var timestamp = new Date().getTime();
    
    alert(format(timestamp));

    function add0(m){
        return m<10?'0'+m:m
    }

    function format(shijianchuo)
    {
        //shijianchuo是整数，否则要parseInt转换
        var time = new Date(shijianchuo);
        var y = time.getFullYear();
        var m = time.getMonth()+1;
        var d = time.getDate();
        var h = time.getHours();
        var mm = time.getMinutes();
        var s = time.getSeconds();
        return y+'-'+add0(m)+'-'+add0(d)+' '+add0(h)+':'+add0(mm)+':'+add0(s);
    }
</script>