X分鐘前的JavaScript功能不能正常工作

Question

我試圖使用下面的JavaScript動態更新的時間戳1 minute ago：

setInterval('relativeTime()', 1000); 

function relativeTime() 
{ 
    console.log(timeSince('2015-09-17 14:59:10')); 
} 


function timeSince(date) { 
    if (typeof date !== 'object') { 
     date = new Date(date); 
    } 

    var seconds = Math.floor((new Date() - date)/1000); 
    var intervalType; 

    var interval = Math.floor(seconds/31536000); 
    if (interval >= 1) { 
     intervalType = 'year'; 
    } else { 
     interval = Math.floor(seconds/2592000); 
     if (interval >= 1) { 
      intervalType = 'month'; 
     } else { 
      interval = Math.floor(seconds/86400); 
      if (interval >= 1) { 
       intervalType = 'day'; 
      } else { 
       interval = Math.floor(seconds/3600); 
       if (interval >= 1) { 
        intervalType = "hour"; 
       } else { 
        interval = Math.floor(seconds/60); 
        if (interval >= 1) { 
         intervalType = "minute"; 
        } else { 
         interval = seconds; 
         intervalType = "second"; 
        } 
       } 
      } 
     } 
    } 

    if (interval > 1 || interval === 0) { 
     intervalType += 's'; 
    } 

    return interval + ' ' + intervalType; 
}; 

的jsfiddle：http://jsfiddle.net/5qpxrta9/2/

的錯誤我得到：

Uncaught ReferenceError: relativeTime is not defined

Answer 1

你沒有在小提琴上定義jQuery，你的函數用法在函數聲明之前，而你的Date聲明使用了錯誤的格式。

function relativeTime() { 
    $('#time').text(timeSince('2015-09-17T14:59:10')); 
} 

setInterval(relativeTime, 1000); 

Answer 2

退房從@Travis還答案更好code

http://jsfiddle.net/9yh9c7xh/2/