JS时间戳转为正常时间格式的方法代码

//JS时间戳转为YYYY-MM-DD HH:mm:ss
function exChangeTime(timeStamp){
var str = "";
str += timeStamp.getFullYear() + '-';
timeStamp.getMonth() < 10 ? str += &#39;0&#39; + (timeStamp.getMonth() + 1) + &#39;-&#39; : str += (timeStamp.getMonth() + 1) + &#39;-&#39;;
timeStamp.getDate() < 10 ? str += &#39;0&#39; + timeStamp.getDate() + &#39; &#39; : str += timeStamp.getDate() + &#39; &#39;;
timeStamp.getHours() < 10 ? str += &#39;0&#39; + timeStamp.getHours() + &#39;:&#39; : str += timeStamp.getHours() + &#39;:&#39;;
timeStamp.getMinutes() < 10 ? str += &#39;0&#39; + timeStamp.getMinutes() + &#39;:&#39; : str += timeStamp.getMinutes() + &#39;:&#39;;
timeStamp.getSeconds() < 10 ? str += &#39;0&#39; + timeStamp.getSeconds(): str += timeStamp.getSeconds();
return str;
}