本文实例为大家分享了javaScript日期工具类的具体代码，供大家参考，具体内容如下
DateUtils = {
patterns: {
PATTERN_ERA: \'G\', //Era 标志符 Era strings. For example: \"AD\" and \"BC\"
PATTERN_YEAR: \'y\', //年
PATTERN_MONTH: \'M\', //月份
PATTERN_DAY_OF_MONTH: \'d\', //月份的天数
PATTERN_HOUR_OF_DAY1: \'k\', //一天中的小时数（1-24）
PATTERN_HOUR_OF_DAY0: \'H\', //24小时制，一天中的小时数（0-23）
PATTERN_MINUTE: \'m\', //小时中的分钟数
PATTERN_SECOND: \'s\', //秒
PATTERN_MILLISECOND: \'S\', //毫秒
PATTERN_DAY_OF_WEEK: \'E\', //一周中对应的星期，如星期一，周一
PATTERN_DAY_OF_YEAR: \'D\', //一年中的第几天
PATTERN_DAY_OF_WEEK_IN_MONTH: \'F\', //一月中的第几个星期(会把这个月总共过的天数除以7,不够准确，推荐用W)
PATTERN_WEEK_OF_YEAR: \'w\', //一年中的第几个星期
PATTERN_WEEK_OF_MONTH: \'W\', //一月中的第几星期(会根据实际情况来算)
PATTERN_AM_PM: \'a\', //上下午标识
PATTERN_HOUR1: \'h\', //12小时制 ，am/pm 中的小时数（1-12）
PATTERN_HOUR0: \'K\', //和h类型
PATTERN_ZONE_NAME: \'z\', //时区名
PATTERN_ZONE_VALUE: \'Z\', //时区值
PATTERN_WEEK_YEAR: \'Y\', //和y类型
PATTERN_ISO_DAY_OF_WEEK: \'u\',
PATTERN_ISO_ZONE: \'X\'
},
week: {
\'ch\': {
\"0\": \"\\u65e5\",
\"1\": \"\\u4e00\",
\"2\": \"\\u4e8c\",
\"3\": \"\\u4e09\",
\"4\": \"\\u56db\",
\"5\": \"\\u4e94\",
\"6\": \"\\u516d\"
},
\'en\': {
\"0\": \"Sunday\",
\"1\": \"Monday\",
\"2\": \"Tuesday\",
\"3\": \"Wednesday\",
\"4\": \"Thursday\",
\"5\": \"Friday\",
\"6\": \"Saturday\"
}
},
//获取当前时间
getCurrentTime: function() {
var today = new Date();
var year = today.getFullYear();
var month = today.getMonth() + 1;
var day = today.getDate();
var hours = today.getHours();
var minutes = today.getMinutes();
var seconds = today.getSeconds();
var timeString = year + \"-\" + month + \"-\" + day + \" \" + hours + \":\" + minutes + \":\" + seconds;
return timeString;
},
/*
* 比较时间大小
* time1>time2 return 1
* time1<time2 return -1
* time1==time2 return 0
*/
compareTime: function(time1, time2) {
if(Date.parse(time1.replace(/-/g, \"/\")) > Date.parse(time2.replace(/-/g, \"/\"))) {
return 1;
} else if(Date.parse(time1.replace(/-/g, \"/\")) < Date.parse(time2.replace(/-/g, \"/\"))) {
return -1;
} else if(Date.parse(time1.replace(/-/g, \"/\")) == Date.parse(time2.replace(/-/g, \"/\"))) {
return 0;
}
},
//是否闰年
isLeapYear: function(year) {
return((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0);
},
//获取某个月的天数，从0开始
getDaysOfMonth: function(year, month) {
return [31, (this.isLeapYear(year) ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
},
getDaysOfMonth2: function(year, month) {
// 将天置为0，会获取其上个月的最后一天
month = parseInt(month) + 1;
var date = new Date(year, month, 0);
return date.getDate();
},
/*距离现在几天的日期：负数表示今天之前的日期，0表示今天，整数表示未来的日期
* 如-1表示昨天的日期，0表示今天，2表示后天
*/
fromToday: function(days) {
var today = new Date();
today.setDate(today.getDate() + days);
var date = today.getFullYear() + \"-\" + (today.getMonth() + 1) + \"-\" + today.getDate();
return date;
},
/**
* 日期时间格式化
* @param {Object} dateTime 需要格式化的日期时间
* @param {String} pattern 格式化的模式，如yyyy-MM-dd hh(HH):mm:ss.S a k K E D F w W z Z
*/
formt: function(dateTime, pattern) {
var date = new Date(dateTime);
if(Bee.StringUtils.isBlank(pattern)) {
return date.toLocaleString();
}
return pattern.replace(/([a-z])\\1*/ig, function(matchStr, group1) {
var replacement = \"\";
switch(group1) {
case Bee.DateUtils.patterns.PATTERN_ERA: //G
break;
case Bee.DateUtils.patterns.PATTERN_WEEK_YEAR: //Y
case Bee.DateUtils.patterns.PATTERN_YEAR: //y
replacement = date.getFullYear();
break;
case Bee.DateUtils.patterns.PATTERN_MONTH: //M
var month = date.getMonth() + 1;
replacement = (month < 10 && matchStr.length >= 2) ? \"0\" + month : month;
break;
case Bee.DateUtils.patterns.PATTERN_DAY_OF_MONTH: //d
var days = date.getDate();
replacement = (days < 10 && matchStr.length >= 2) ? \"0\" + days : days;
break;
case Bee.DateUtils.patterns.PATTERN_HOUR_OF_DAY1: //k(1~24)
var hours24 = date.getHours();
replacement = hours24;
break;
case Bee.DateUtils.patterns.PATTERN_HOUR_OF_DAY0: //H(0~23)
var hours24 = date.getHours();
replacement = (hours24 < 10 && matchStr.length >= 2) ? \"0\" + hours24 : hours24;
break;
case Bee.DateUtils.patterns.PATTERN_MINUTE: //m
var minutes = date.getMinutes();
replacement = (minutes < 10 && matchStr.length >= 2) ? \"0\" + minutes : minutes;
break;
case Bee.DateUtils.patterns.PATTERN_SECOND: //s
var seconds = date.getSeconds();
replacement = (seconds < 10 && matchStr.length >= 2) ? \"0\" + seconds : seconds;
break;
case Bee.DateUtils.patterns.PATTERN_MILLISECOND: //S
var milliSeconds = date.getMilliseconds();
replacement = milliSeconds;
break;
case Bee.DateUtils.patterns.PATTERN_DAY_OF_WEEK: //E
var day = date.getDay();
replacement = Bee.DateUtils.week[\'ch\'][day];
break;
case Bee.DateUtils.patterns.PATTERN_DAY_OF_YEAR: //D
replacement = Bee.DateUtils.dayOfTheYear(date);
break;
case Bee.DateUtils.patterns.PATTERN_DAY_OF_WEEK_IN_MONTH: //F
var days = date.getDate();
replacement = Math.floor(days / 7);
break;
case Bee.DateUtils.patterns.PATTERN_WEEK_OF_YEAR: //w
var days = Bee.DateUtils.dayOfTheYear(date);
replacement = Math.ceil(days / 7);
break;
case Bee.DateUtils.patterns.PATTERN_WEEK_OF_MONTH: //W
var days = date.getDate();
replacement = Math.ceil(days / 7);
break;
case Bee.DateUtils.patterns.PATTERN_AM_PM: //a
var hours24 = date.getHours();
replacement = hours24 < 12 ? \"\\u4e0a\\u5348\" : \"\\u4e0b\\u5348\";
break;
case Bee.DateUtils.patterns.PATTERN_HOUR1: //h(1~12)
var hours12 = date.getHours() % 12 || 12; //0转为12
replacement = (hours12 < 10 && matchStr.length >= 2) ? \"0\" + hours12 : hours12;
break;
case Bee.DateUtils.patterns.PATTERN_HOUR0: //K(0~11)
var hours12 = date.getHours() % 12;
replacement = hours12;
break;
case Bee.DateUtils.patterns.PATTERN_ZONE_NAME: //z
replacement = Bee.DateUtils.getZoneNameValue(date)[\'name\'];
break;
case Bee.DateUtils.patterns.PATTERN_ZONE_VALUE: //Z
replacement = Bee.DateUtils.getZoneNameValue(date)[\'value\'];
break;
case Bee.DateUtils.patterns.PATTERN_ISO_DAY_OF_WEEK: //u
break;
case Bee.DateUtils.patterns.PATTERN_ISO_ZONE: //X
break;
default:
break;
}
return replacement;
});
},
/**
* 计算一个日期是当年的第几天
* @param {Object} date
*/
dayOfTheYear: function(date) {
var obj = new Date(date);
var year = obj.getFullYear();
var month = obj.getMonth(); //从0开始
var days = obj.getDate();
var daysArr = [31, (this.isLeapYear(year) ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
for(var i = 0; i < month; i++) {
days += daysArr[i];
}
return days;
},
//获得时区名和值
getZoneNameValue: function(dateObj) {
var date = new Date(dateObj);
date = new Date(Date.UTC(date.getFullYear(), date.getMonth(), date.getDate()));
var arr = date.toString().match(/([A-Z]+)([-+]\\d+:?\\d+)/);
var obj = {
\'name\': arr[1],
\'value\': arr[2]
};
return obj;
}
};
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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