如何限制2位数的描述

Question

I need to validate my description text-area for the text in that will contain only 2 or less than 2 digits .It will include text also.I have tried with **regex** but I have no result.I have tried like

if(value.match(/^\d{1,2}$/)){
    return false;
}else{
    return true;
}         

Means

Valid :

this is 22 years old

In Valid :

this is 222 years old

Can anyone suggest me any solution.Thanks in advance.

Answer 1

Without any implementing code it is hard to say...

But you'll want to remove the ^ and $ from your regex, they state begining and end of the string respectively.

You'd be better on trying to find numbers of more than 2 digits and return true if found:

/\d{3,}/

This will be true for all strings that include numbers of 3 digits so you know it is not good.

EDIT:

if(!value.match(/\d{3,}/)){
    return false;
}else{
    return true;
}
//Or, as Julian Descottes *almost* pointed out, simply return the value of the function
return !!value.match(/\d{3,}/);

Re-reading OP, I am not sure if this is exactly the expected behaviour as it checks for NUMBERS of 3digits or more, but does not count the amount of digits in the text allowing

I am 24 and my brother is 29

This has 4 digits, should it be good or bad?

Answer 2

^\\d{1,2}$ won't match any text, but it will match both the start and end of the string. So, it will match "34" but not "1934" or "Babylon 5" .

What you probably want is ^\\D*\\d{1,2}\\D*$ . The flanking \\D*'s mean "match 0 to an infinite number of non-digit characters."