JavaScript code to determine the correctness of input dates in two formats_javascript skills

The simplest

Copy code The code is as follows:

function isValidDate( dateStr) { 
 var matchArray = dateStr.match(/^[0-9] -[0-1][0-9]-[0-3][0-9]$/)
if ( matchArray == null) {
alert("Invalid date: " dateStr);
return false;
}
return true;
} }
function isValidDate(dateStr) {
var matchArray = dateStr.match(/^[0-9] -[0-1][0-9]-[0-3][0-9]$/)
if (matchArray == null) {
alert("Invalid date: " dateStr);
return false;
return true; }

Second type

Copy code The code is as follows:

The third type is more complicated

Copy code The code is as follows:

< ;script language=javascript>

String.prototype.isTime = function()
{
var r = this.match(/^(d{1,4})(-|/)(d{ 1,2})2(d{1,2}) (d{1,2}):(d{1,2}):(d{1,2})$/); ==null)return false; var d = new Date(r[1], r[3]-1,r[4],r[5],r[6],r[7]);
return (d.getFullYear()==r[1]&&(d.getMonth() 1)==r[3]&&d.getDate()==r[4]&&d.getHours()==r[5]&&d .getMinutes()==r[6]&&d.getSeconds()==r[7]);
}
alert("2002-1-31 12:34:56".isTime());
alert("2001-2-29 12:54:56".isTime());
alert("2002-1-41 12:00:00".isTime());
< ;/script>