/** 
    * 时间戳转化为年 月 日 时 分 秒 
    * number: 传入时间戳 
    * format:返回格式,支持自定义,但参数必须与formateArr里保持一致 
    */  
    function formatTime(number,format) {  
    
    var formateArr  = ['Y','M','D','h','m','s'];  
    var returnArr   = [];  
    
    var date = new Date(number * 1000);  
    returnArr.push(date.getFullYear());  
    returnArr.push(formatNumber(date.getMonth() + 1));  
    returnArr.push(formatNumber(date.getDate()));  
    
    returnArr.push(formatNumber(date.getHours()));  
    returnArr.push(formatNumber(date.getMinutes()));  
    returnArr.push(formatNumber(date.getSeconds()));  
    
    for (var i in returnArr)  
    {  
        format = format.replace(formateArr[i], returnArr[i]);  
    }  
    return format;  
    } 

    //数据转化  
    function formatNumber(n) {  
    n = n.toString()  
    return n[1] ? n : '0' + n  
    }  

  然后调用formatTime(timestamp3,'Y/M/D h:m:s')