js date
Date Object Properties
日期对象方法
FF: Firefox, N: Netscape, IE: Internet Explorer
FF:火狐，N:网景，IE
| Method 方法 |
Description 描述 |
FF | N | IE |
|---|---|---|---|---|
| Date() | Returns today's date and time 返回今天的日期和时间 |
1 | 2 | 3 |
| getDate() | Returns the day of the month from a Date object (from 1-31) 返回月中的第几天(1到31) |
1 | 2 | 3 |
| getDay() | Returns the day of the week from a Date object (from 0-6) 返回一周中的第几天(0到6) |
1 | 2 | 3 |
| getMonth() | Returns the month from a Date object (from 0-11) 返回月份数(0到11) |
1 | 2 | 3 |
| getFullYear() | Returns the year, as a four-digit number, from a Date object 返回完整的年份数 |
1 | 4 | 4 |
| getYear() | Returns the year, as a two-digit or a four-digit number, from a Date object. Use getFullYear() instead !! 返回年份，可以是两位的或是四位的 |
1 | 2 | 3 |
| getHours() | Returns the hour of a Date object (from 0-23) 返回日期对象的小时数（0到23） |
1 | 2 | 3 |
| getMinutes() | Returns the minutes of a Date object (from 0-59) 返回日期对象的分钟（0到59） |
1 | 2 | 3 |
| getSeconds() | Returns the seconds of a Date object (from 0-59) 返回日期对象的秒（0到59） |
1 | 2 | 3 |
| getMilliseconds() | Returns the milliseconds of a Date object (from 0-999) 返回毫秒（0到999） |
1 | 4 | 4 |
| getTime() | Returns the number of milliseconds since midnight Jan 1, 1970 从1970年1月1号午夜到现在一共花去的毫秒数 |
1 | 2 | 3 |
| getTimezoneOffset() | Returns the difference in minutes between local time and Greenwich Mean Time (GMT) 本地时间和GMT相差多少分钟 |
1 | 2 | 3 |
| getUTCDate() | Returns the day of the month from a Date object according to universal time (from 1-31) 依据国际时间来得到月中的第几天（1到31） |
1 | 4 | 4 |
| getUTCDay() | Returns the day of the week from a Date object according to universal time (from 0-6) 依据国际时间来得到现在是星期几（0到6） |
1 | 4 | 4 |
| getUTCMonth() | Returns the month from a Date object according to universal time (from 0-11) 依据国际时间来得到月份（0到11） |
1 | 4 | 4 |
| getUTCFullYear() | Returns the four-digit year from a Date object according to universal time 依据国际时间来得到完整的年份 |
1 | 4 | 4 |
| getUTCHours() | Returns the hour of a Date object according to universal time (from 0-23) 依据国际时间来得到小时（0-23） |
1 | 4 | 4 |
| getUTCMinutes() | Returns the minutes of a Date object according to universal time (from 0-59) 依据国际时间来返回分钟（0到59） |
1 | 4 | 4 |
| getUTCSeconds() | Returns the seconds of a Date object according to universal time (from 0-59) 依据国际时间来返回秒（0到59） |
1 | 4 | 4 |
| getUTCMilliseconds() | Returns the milliseconds of a Date object according to universal time (from 0-999) 依据国际时间来返回毫秒（0到999） |
1 | 4 | 4 |
| parse() | Takes a date string and returns the number of milliseconds since midnight of January 1, 1970 或得并返回自1970年1月1号凌晨到现在一共花掉了多少毫秒 |
1 | 2 | 3 |
| setDate() | Sets the day of the month in a Date object (from 1-31) 设置日 |
1 | 2 | 3 |
| setMonth() | Sets the month in a Date object (from 0-11) 设置月 |
1 | 2 | 3 |
| setFullYear() | Sets the year in a Date object (four digits) 设置年份 |
1 | 4 | 4 |
| setYear() | Sets the year in the Date object (two or four digits). Use setFullYear() instead !! 用setFullYear()来取代 |
1 | 2 | 3 |
| setHours() | Sets the hour in a Date object (from 0-23) 设置小时 |
1 | 2 | 3 |
| setMinutes() | Set the minutes in a Date object (from 0-59) 设置分钟 |
1 | 2 | 3 |
| setSeconds() | Sets the seconds in a Date object (from 0-59) 设置秒 |
1 | 2 | 3 |
| setMilliseconds() | Sets the milliseconds in a Date object (from 0-999) 设置毫秒 |
1 | 4 | 4 |
| setTime() | Calculates a date and time by adding or subtracting a specified number of milliseconds to/from midnight January 1, 1970 | 1 | 2 | 3 |
| setUTCDate() | Sets the day of the month in a Date object according to universal time (from 1-31) 依据国际时间来设置日期 |
1 | 4 | 4 |
| setUTCMonth() | Sets the month in a Date object according to universal time (from 0-11) 依据国际时间来设置月 |
1 | 4 | 4 |
| setUTCFullYear() | Sets the year in a Date object according to universal time (four digits) 依据国际时间来设置年份 |
1 | 4 | 4 |
| setUTCHours() | Sets the hour in a Date object according to universal time (from 0-23) 依据国际时间来设置小时 |
1 | 4 | 4 |
| setUTCMinutes() | Set the minutes in a Date object according to universal time (from 0-59) 依据国际时间来设置分钟 |
1 | 4 | 4 |
| setUTCSeconds() | Set the seconds in a Date object according to universal time (from 0-59) 依据国际时间来设置秒 |
1 | 4 | 4 |
| setUTCMilliseconds() | Sets the milliseconds in a Date object according to universal time (from 0-999) 依据国际时间来设置毫秒 |
1 | 4 | 4 |
| toSource() | Represents the source code of an object 显示对象的源代码 |
1 | 4 | - |
| toString() | Converts a Date object to a string 将日期对象转换为字符串 |
1 | 2 | 4 |
| toGMTString() | Converts a Date object, according to Greenwich time, to a string. Use toUTCString() instead !! 根据格林威治时间将Date[日期]对象转换为一个字符串。可以使用toUTCString()替代这种方法 |
1 | 2 | 3 |
| toUTCString() | Converts a Date object, according to universal time, to a string 根据通用时间将一个Date[日期]对象转换为一个字符串 |
1 | 4 | 4 |
| toLocaleString() | Converts a Date object, according to local time, to a string 根据本地时间将一个Date[日期]对象转换为一个字符串 |
1 | 2 | 3 |
| UTC() | Takes a date and returns the number of milliseconds since midnight of January 1, 1970 according to universal time 根据通用时间将日期计算为从1970年1月1日午夜至今所经过的时间（单位：毫秒） |
1 | 2 | 3 |
| valueOf() | Returns the primitive value of a Date object 返回日期对象的原始值 |
1 | 2 | 4 |
Date Object Properties
日期对象属性
| Property 属性 |
Description 描述 |
FF | N | IE |
|---|---|---|---|---|
| constructor | A reference to the function that created the object 所建立对象的函数参考 |
1 | 4 | 4 |
| prototype | Allows you to add properties and methods to the object 能够为对象加入的属性和方法 |
1 | 3 | 4 |
实例：
1、对类似“2002-03-19 11:33”这样的日期进行加减：
var date = new Date("2002-03-19 11:33");
//1 day=24×60×60 = 86400 seconds
//加一天
var d = date.getTime() + 24*60*60;
var newdate = new Date(d);
2、日期减去天数等于第二个日期
<script language=Javascript>
function cc(dd,dadd)
{
//可以加上错误处理
var a = new Date(dd)
a = a.valueOf()
a = a - dadd * 24 * 60 * 60 * 1000
a = new Date(a)
alert(a.getFullYear() + "年" + (a.getMonth() + 1) + "月" + a.getDate() + "日")
}
cc("12/23/2002",2)
</script>
这里不得不做补充,浪费好多时间得出教训:
Javascript 对时间的代号
0-11数字表示1-12月: var a= new Date(2006,5,6) 结果是2006-6-6
0-6表示星期
1-31表示日期
0-23小时
0-59分钟,秒
3、自己写的一个测试页date.html：js日期加N天
<html>
<head>
<title>js日期增加N天</title>
</head>
<script type="text/javascript">
function addDateStr(dateStr,days){
var year = parseInt(dateStr.substring(0,4));
var month = parseInt(dateStr.substring(5,7),10)-1;
var day = parseInt(dateStr.substring(8,10),10);
alert("year :["+year+"]"+"\nmonth :["+month+"]"+ "\nday :["+day+"]");
var date = new Date(year,month,day);
var d = date.getTime() + days*24*60*60*1000;
var newDate= new Date(d);
year=newDate.getFullYear();
month=newDate.getMonth()+1;
if(month<10){
month="0"+month;
}
day=newDate.getDate();
if(day<10){
day="0"+day;
}
alert("year :["+year+"]"+"\nmonth :["+month+"]"+ "\nday :["+day+"]");
var newDateStr=year+"-"+month+"-"+day;
return newDateStr;
}
function test(){
alert(addDateStr(document.getElementById("txtTest").value,document.getElementById
("txtDay").value));
}
</script>
<body>
<input type="text" id="txtTest" value="2008-02-28">
<input type="text" id="txtDay" value="1">
<input type="button" id="btnTest" value="test" onclick="test()">
</body>
</html>