获取 JavaScript 中日期之间的相对时间戳差异

给定 2 个 JavaScript 日期，工作是获取它们之间的相对时间差（例如 2 小时前、2.5 天前等）。这里借助 javaScript 讨论了 2 种方法。

方法一：

• 获取变量中的 prevDate 和 currDate。
• 计算 Minute、Hour、Day、Month 和 Year 中的毫秒数。
• 计算 prevDate 和 currDate 之间的毫秒差。
• 按此顺序将这些毫秒与 Minute、Hour、Day、Month 和一年中的毫秒进行比较。
• 如果毫秒小于其中任何一个，则计算相应的分钟、小时、天、月和年。

示例 1：此示例实现了上述方法。

  

    
        Get the relative timestamp difference between dates in JavaScript.
    
    
    

  

      
            GeeksForGeeks  
        
    
    
    
        click here
    
    
    
    
        var up = document.getElementById('GFG_UP');
        var down = document.getElementById('GFG_DOWN');
        var prevDate = new Date();
        prevDate.setDate(prevDate.getDate() - 6);
        up.innerHTML =
            "Click on the button to get relative time difference between dates." +
            "<br><br>Older Date : " + prevDate;
  
        function timeDiff(curr, prev) {
            var ms_Min = 60 * 1000; // milliseconds in Minute
            var ms_Hour = ms_Min * 60; // milliseconds in Hour
            var ms_Day = ms_Hour * 24; // milliseconds in day
            var ms_Mon = ms_Day * 30; // milliseconds in Month
            var ms_Yr = ms_Day * 365; // milliseconds in Year
            var diff = curr - prev; //difference between dates.
            // If the diff is less then milliseconds in a minute
            if (diff < ms_Min) {
                return Math.round(diff / 1000) + ' seconds ago';
  
                // If the diff is less then milliseconds in a Hour
            } else if (diff < ms_Hour) {
                return Math.round(diff / ms_Min) + ' minutes ago';
  
                // If the diff is less then milliseconds in a day
            } else if (diff < ms_Day) {
                return Math.round(diff / ms_Hour) + ' hours ago';
  
                // If the diff is less then milliseconds in a Month
            } else if (diff < ms_Mon) {
                return 'Around ' + Math.round(diff / ms_Day) + ' days ago';
  
                // If the diff is less then milliseconds in a year
            } else if (diff < ms_Yr) {
                return 'Around ' + Math.round(diff / ms_Mon) + ' months ago';
            } else {
                return 'Around ' + Math.round(diff / ms_Yr) + ' years ago';
            }
        }
  
        function GFG_Fun() {
            $('#GFG_DOWN').html(timeDiff(new Date(), prevDate));
        }
    

  

输出：

• 在点击按钮之前：
  
• 点击按钮后：
  

方法二：

• 获取变量中的 prevDate 和 currDate。
• 计算日期之间的秒数、分钟数、小时数和天数。
• 按此顺序将这些参数与 60 秒、60 分钟、24 小时、天进行比较。
• 如果满足这些条件中的任何一个，则返回相应的参数。

示例 2：此示例实现了上述方法。

  

    
        Get the relative timestamp difference
      between dates in JavaScript.
    
    
    

  

      
            GeeksForGeeks  
        
    
    
    
        click here
    
    
    
    
        var up = document.getElementById('GFG_UP');
        var down = document.getElementById('GFG_DOWN');
        var prevDate = new Date();
        prevDate.setDate(prevDate.getDate() - 6);
        prevDate.setHours(prevDate.getHours() - 6);
        up.innerHTML =
            "Click on the button to get relative time " +
            "difference between dates.<br><br>Older Date : " + prevDate;
  
        function conversion(ms) {
  
            // Calculating Seconds
            var sec = (ms / 1000).toFixed(1);
  
            // Calculating Minutes
            var min = (ms / (1000 * 60)).toFixed(1);
  
            // Calculating hours 
            var hrs = (ms / (1000 * 60 * 60)).toFixed(1);
  
            // Calculating days
            var days = (ms / (1000 * 60 * 60 * 24)).toFixed(1);
            if (sec < 60) {
                return sec + " Sec";
            } else if (min < 60) {
                return min + " Min";
            } else if (hrs < 24) {
                return hrs + " Hrs";
            } else {
                return days + " Days"
            }
        }
  
        function GFG_Fun() {
            var date = new Date();
$('#GFG_DOWN').html(conversion(date.getTime() - prevDate.getTime()));
        }
    

  

输出：

• 在点击按钮之前：
  
• 点击按钮后：