JS时间戳时间互转

<input type="text" id="orgvalue"/> 
<input type="text" id="destvalue"/>
<input type="button" onclick="toTime()" value="转时间"/>
<input type="button" onclick="toTimeStamp()" value="转时间戳"/>

//转时间
function toTime() {
    var v= document.getElementById('orgvalue').value;
    document.getElementById('destvalue').value=timestampToTime(v)
}
//转时间戳
function toTimeStamp() {
    var v = document.getElementById('orgvalue').value;
    var date = new Date(v);
    document.getElementById('destvalue').value = date.getTime()/1000;
}
function timestampToTime(timestamp) {
    var date = new Date(timestamp * 1000);//时间戳为10位需*1000，
    var Y = date.getFullYear() + '-';
    var M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 
    var D = date.getDate() + ' ';
    var h = date.getHours() + ':';
    var m = date.getMinutes() + ':';
    var s = date.getSeconds();
    return Y + M + D + h + m + s;
}

 不带毫秒数