string文字列の検索および一致の例コード

内蔵のDate関数

var mydate = new Date();
mydate.getYear(); //現在の年を取得する（2位）
mydate.getFullYear(); //完全な年を取得する（4桁,1970-????)
mydate.getMonth(); //現在月(0-11,0を表します1月)
mydate.getDate(); //現在日(1-31)
mydate.getDay(); //現在曜日X(0-6,0は日曜日を表します)
mydate.getTime(); //現在時刻(から1970.1.1開始のミリ秒数)
mydate.getHours(); //現在時数(0-23)
mydate.getMinutes(); //現在分数(0-59)
mydate.getSeconds(); //現在秒数(0-59)
mydate.getMilliseconds(); //現在ミリ秒数(0-999)
mydate.toLocaleDateString(); //現在日付の取得
var mytime=mydate.toLocaleTimeString(); //現在時刻の取得
mydate.toLocaleString( ); //日付と時間の取得

拡張関数

Date.prototype.isLeapYear 閏年判定
Date.prototype.Format 日期フォーマット
Date.prototype.DateAdd 日期計算
Date.prototype.DateDiff 日期の差比較
Date.prototype.toString 日期を文字列に変換
Date.prototype.toArray 日期を配列に分割
Date.prototype.DatePart 日期の部分情報取得
Date.prototype.MaxDayOfDate 日期がその月の最大日数取得
Date.prototype.WeekNumOfYear 日期がその年の何週目か判定
StringToDate 文字列を日付型に変換
IsValidDate 日期の有効性確認
CheckDateTime 完整な日付と時間のチェック
daysBetween 日期の日数差

//---------------------------------------------------
// 閏年判定
//---------------------------------------------------
Date.prototype.isLeapYear = function()
{
return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0));
}
//---------------------------------------------------
// 日付フォーマット
// フォーマット YYYY/yyyy/YY/yy 表示年
// MM/M 月份
// W/W 週
// dd/DD/d/D 日期
// hh/HH/h/H 時間
// mm/m 分鐘
// ss/SS/s/S 秒
//---------------------------------------------------
Date.prototype.Format = function(formatStr)
{
var str = formatStr;
var Week = ['日','月','火','水','木','金','土'];
str=str.replace(/yyyy|YYYY/,this.getFullYear());
str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100));
str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():'0' + this.getMonth());
str=str.replace(/M/g,this.getMonth());
str=str.replace(/w|W/g,Week[this.getDay()]);
str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' + this.getDate());
str=str.replace(/d|D/g,this.getDate());
str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():'0' + this.getHours());
str=str.replace(/h|H/g,this.getHours());
str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():'0' + this.getMinutes());
str=str.replace(/m/g,this.getMinutes());
str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():'0' + 
str=str.replace(/s|S/g,this.getSeconds());
return str;
}
//+---------------------------------------------------
//| 2つの時間の日数の差を求めます 日期形式が YYYY-MM-dd
//+---------------------------------------------------

{
5-
var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf('-')+1);
var OneYear = DateOne.substring(0,DateOne.indexOf ('-
var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-
var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1);
var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-
var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);
return Math.abs(cha);
}
//+---------------------------------------------------
//| 日期計算
//+---------------------------------------------------
Date.prototype.DateAdd = function(strInterval, Number) {
var dtTmp = this;
switch (strInterval) {
case 's' :return new Date(Date.parse(dtTmp) + (1000 * Number));
case 'n' :return new Date(Date.parse(dtTmp) + (60000 * Number));
case 'h' :return new Date(Date.parse(dtTmp) + (3600000 * Number));
case 'd' :return new Date(Date.parse(dtTmp) + (86400000 * Number));
case 'w' :return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number));
case 'q' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());
}
}
//+---------------------------------------------------
//｜ 比较日期差 dtEnd 格式为日期型或者 有效日期格式字符串
//+---------------------------------------------------
Date.prototype.DateDiff = function(strInterval, dtEnd) {
var dtStart = this;
if (typeof dtEnd == 'string' )//如果是字符串转换为日期型
{
dtEnd = StringToDate(dtEnd);
}
switch (strInterval) {
case 's' :return parseInt((dtEnd - dtStart) / 1000);
case 'n' :return parseInt((dtEnd - dtStart) / 60000);
case 'h' :return parseInt((dtEnd - dtStart) / 3600000);
case 'd' :return parseInt((dtEnd - dtStart) / 86400000);
case 'w' :return parseInt((dtEnd - dtStart) / (86400000 * 7))++;
case 'm' :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1);
case 'y' :return dtEnd.getFullYear() - dtStart.getFullYear();
}
}
//+---------------------------------------------------
//｜ 日期输出字符串，重载了系统的toString方法
//+---------------------------------------------------
Date.prototype.toString = function(showWeek)
{
var myDate= this;
var str = myDate.toLocaleDateString();
if (showWeek)
{
var Week = ['日','月','火','水','木','金','土'];
str +＝ ' 曜日' + Week[myDate.getDay()];
}
return str;
}
//+---------------------------------------------------
//｜ 日期合法性验证
//| フォーマットは：YYYY-MM-DD或YYYY/MM/DD
//+---------------------------------------------------
IsValidDate(DateStr)
{
var sDate=DateStr.replace/(^\s+|\s+$)/g,''); //去两边空格;
if(sDate=='') return true;
//如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为''
//数据库中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-
var s = sDate.replace(/[\d]{ 4,4 }[\-/]}{ 1 }[\d]{ 1,2 }[\-/]}{ 1 }[\d]{ 1,2 }/g,'');
if (s=='') //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-
{
var t=new Date(sDate.replace(/\-/g,'/
var ar = sDate.split(/[-/:]/);
if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate())
{
//alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');
return false;
}
}
else
{
//alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');
return false;
}
return true;
}
//+---------------------------------------------------
//| 日期时间检查
//| フォーマットは：YYYY-MM-DD HH:MM:SS
//+---------------------------------------------------
function CheckDateTime(str)
{
var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/;
var r = str.match(reg);
if(r==null)return false;
r[2]=r[2];-1;
var d= new Date(r[1],r[2],r[3],r[4],r[5],r[6);
if(d.getFullYear()!=r[1})return false;
if(d.getMonth()!=r[2})return false;
if(d.getDate()!=r[3})return false;
if(d.getHours()!=r[4})return false;
if(d.getMinutes()!=r[5})return false;
if(d.getSeconds()!=r[6})return false;
return true;
}
//+---------------------------------------------------
//| 日期を配列に分割する
//+---------------------------------------------------
Date.prototype.toArray = function()
{
var myDate = this;
var myArray = Array();
myArray[0] = myDate.getFullYear();
myArray[1] = myDate.getMonth();
myArray[2] = myDate.getDate();
myArray[3] = myDate.getHours();
myArray[4] = myDate.getMinutes();
myArray[5] = myDate.getSeconds();
return myArray;
}
//+---------------------------------------------------
//| 日期データ情報を取得
//| パラメータintervalはデータタイプを示します
//| y年m月d日w週ww週h時n分s秒
//+---------------------------------------------------
Date.prototype.DatePart = function(interval)
{
var myDate = this;
var partStr='';
var Week = ['日','月','火','水','木','金','土'];
switch (interval)
{
case 'y' :partStr = myDate.getFullYear();break;
case 'm' :partStr = myDate.getMonth()+1;break;
case 'd' :partStr = myDate.getDate();break;
case 'w' :partStr = Week[myDate.getDay()];break;
case 'ww' :partStr = myDate.WeekNumOfYear();break;
case 'h' :partStr = myDate.getHours();break;
case 'n' :partStr = myDate.getMinutes();break;
case 's' :partStr = myDate.getSeconds();break;
}
return partStr;
}
//+---------------------------------------------------
//| 現在の日付がその月の最大の日数を取得
//+---------------------------------------------------
Date.prototype.MaxDayOfDate = function()
{
var myDate = this;
var ary = myDate.toArray();
var date1 = (new Date(ary[0],ary[1];+1,1))++;
var date2 = date1.dateAdd(1,'m',1);
var result = dateDiff(date1.Format('yyyy-MM-dd'),date2.Format('yyyy-MM-dd'));
return result;
}
//+---------------------------------------------------
//| 現在の日付がその年の何週目にあるかを取得
//+---------------------------------------------------
Date.prototype.WeekNumOfYear = function()
{
var myDate = this;
var ary = myDate.toArray();
var year = ary[0];
var month = ary[1];+1;
var day = ary[2]);
document.write('< script language=VBScript\> \n');
document.write('myDate = DateValue(''+month+'-'+day+'-'+year+'); \n');
document.write('result = DatePart('ww', myDate) \n');
document.write(' \n');
return result;
}
//+---------------------------------------------------
//| 字符串转成日期类型
//| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd
//+---------------------------------------------------
function StringToDate(DateStr)
{
var converted = Date.parse(DateStr);
var myDate = new Date(converted);
if (isNaN(myDate))
{
//var delimChar = DateStr.indexOf('/);-1?/:-);
var arys= DateStr.split('-);
myDate = new Date(arys[0],--arys[1],arys[2);
}
return myDate;
} 

以上就是小编为大家带来的js获取时间函数及扩展函数的方法全部内容了，希望大家多多支持呐喊教程~