js 时间格式化工具类

/**
 * 返回示例：0 天 4 小时 7 分钟 57 秒  
 * @param second 毫秒数 
 * @returns {String} 时间html
 */
function secondToDayHTML(second){
    var time = parseInt(second/1000);
    var day = parseInt(time/(60*60*24));
    var day_eles = time%(60*60*24);
    var hour = parseInt(day_eles/(60*60)); 
    var hour_else = day_eles%(60*60);
    var minute = parseInt(hour_else/(60)); 
    var secoud = hour_else%(60);
    return(day+" 天 "+hour+" 小时 "+minute+" 分钟 "+secoud+" 秒 ");
}

/**
 * 返回示例：0 小时 0 分钟 4 秒 
 * @param second 毫秒数
 * @returns {String} 时间html
 */
function secondToHourHTML(second){
    var time = parseInt(second/1000);
    var hour = parseInt(time/(60*60)); 
    var hour_else = time%(60*60);
    var minute = parseInt(hour_else/(60)); 
    var secoud = hour_else%(60);
    return(hour+" 小时 "+minute+" 分钟 "+secoud+" 秒 ");
}

来源：https://www.cnblogs.com/excellencesy/p/12213731.html