Hi Siva,
You can use regex validation for year to address here are some of the links which may be helpful to you.
1. https://www.regextester.com/93651
2. https://www.py4u.net/discuss/340793
3. https://stackoverflow.com/questions/17547710/javascript-regex-validate-years-in-range
If you can get exact regex using above link then you can just check with Regex.Match to address your requirement.
If not then you can perform below operation-
1. Check Regex.Match with 4 digit number ^[12][0-9]{3}$ ( Validate from 1000 - 2999)
2. After above regex check you can validate it with current year using -> new Date().getFullYear()
3. Code will be some how as below,
function Year_Validation(input)
{
var Year = /^[12][0-9]{3}$/;
if((input.value.match(year))
{
currentYear = new Date().getFullYear();
if(currentYear <= input){
// Perform Operation
}
} else { alert("This is not a valid year"); } }
Hope this help you, If it is helpful pls mark as Verified Answer, which will help others as well. Thanks!
