- // 函数名: CheckDateTime
- // 功能介绍: 检查是否为日期时间
- function CheckDateTime(str){
- var reg = /^(\d+)-(\d{
- 1,2
- })-(\d{
- 1,2
- }) (\d{
- 1,2
- }):(\d{
- 1,2
- }):(\d{
- 1,2
- })$/;
- var r = str.match(reg);
- if(r==null)return false;
- r[2]=r[2]-1;
- var d= new Date(r[1], r[2],r[3], r[4],r[5], r[6]);
- if(d.getFullYear()!=r[1])return false;
- if(d.getMonth()!=r[2])return false;
- if(d.getDate()!=r[3])return false;
- if(d.getHours()!=r[4])return false;
- if(d.getMinutes()!=r[5])return false;
- if(d.getSeconds()!=r[6])return false;
- return true;
- }
- /**
- 判断输入框中输入的日期格式为 yyyy-mm-dd 和正确的日期
- */
- function IsDate(sm,mystring) {
- var reg = /^(\d{
- 4
- })-(\d{
- 2
- })-(\d{
- 2
- })$/;
- var str = mystring;
- var arr = reg.exec(str);
- if (str=="") return true;
- if (!reg.test(str)&&RegExp.$2<=12&&RegExp.$3<=31){
- alert("请保证"+sm+"中输入的日期格式为 yyyy-mm-dd 或正确的日期!");
- return false;
- }
- return true;
- }
- function toDateFromString( strDate )
- {
- if (strDate.length != 8) {
- return null ;
- }
- var dtDate = null ;
- var nYear = parseInt( strDate.substring( 0, 4 ), 10 ) ;
- var nMonth = parseInt( strDate.substring( 4, 6 ), 10 ) ;
- var nDay = parseInt( strDate.substring( 6, 8 ), 10 ) ;
- if( isNaN( nYear ) == true || isNaN( nMonth ) == true || isNaN( nDay ) == true )
- {
- return null ;
- }
- dtDate = new Date( nYear, nMonth - 1, nDay ) ;
- if( nYear != dtDate.getFullYear() || ( nMonth - 1 ) != dtDate.getMonth() || nDay != dtDate.getDate() )
- {
- return null ;
- }
- return dtDate ;
- }
YYYYMMDD 的格式
来源: https://www.2cto.com/kf/201810/782647.html