how can i validate year textbox in javascript?

Question

I am using a textbox on my page which is used to enter year in yyyy-yyyy format.

Can you tell how can i validate textbox in this format through javascript??

Thanks in advance...

@minikomi: not between 1980-1993..even i want to enter year like 1980-1999 — divya
– divya, Commented Jun 3, 2011 at 8:23
What @minikomi means is, whether you want to validate the format only (i.e. 4 digits dash 4 digits) or also the range of the years (e.g. the users are not allowed to enter a start date that is before 1975). We have to know that to be able to give you a correct answer. — Felix Kling
– Felix Kling, Commented Jun 3, 2011 at 8:24
@ Felix Kling: yes, i want to validate the format only (i.e. 4 digits dash 4 digits). — divya
– divya, Commented Jun 3, 2011 at 8:27
In which case, Merjin's answer should be fine... Be careful what you accept and how you want to use it though! — minikomi
– minikomi, Commented Jun 3, 2011 at 9:31

mrbellek · Accepted Answer · 2011-06-03 08:22:24Z

4

You can match it with a regular expression:

var pattern = /\d{4}-\d{4}/;

answered Jun 3, 2011 at 8:22

mrbellek

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3 Comments

Hmm.. but does year 0000 make sense? How about 9999? What to do in the case 2831-0134...

@minikomi - Merjin's RegExp is what the OP asked for. Of course it may not be what they want. :-)

Yep, just saw the new comment.. sorry!

Farshid Zaker · Accepted Answer · 2011-06-03 08:36:40Z

2

If you are not using any javascript library (like jQuery, etc), Javascript Regular Expressions could be used for validating the input.

answered Jun 3, 2011 at 8:21

Farshid Zaker

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Why would jQuery help or be an alternative to a regular expression?

It's not an alternative. But some of jQuery plugins could complement and simplify the pure regular expression approach.