/** 
     * 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(parseInt(number));  
      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  
    } 

调用方法

createTime = formatTime(val.createDate,'Y-M-D h:m:s');

效果图

Q.E.D.