Numeric input min length 4, max 5 and not 0

How can I make a numeric input with min length 4, max 5 and not 0;

like you can input 1234 but 5th digit shouldn't be 0; So no 12340 also no more than 4999?

Answer by https://stackoverflow.com/users/665261/billy-moon :

replace(/[^0-9]/,'') -> makes numeric;

replace(/^([0-9]{4})[^1-9]+/,'$1') -> makes 5th digit not 0

replace(/^[^0-4]/,'') ->makes first digit 0-4

Code:

$('input').bind('keyup change',function(){
    $(this).attr({开发者_StackOverflow中文版 value: $(this).attr('value').replace(/[^0-9]/,'').replace(/^([0-9]{4})[^1-9]+/,'$1').replace(/^[^0-4]/,'') })
})

I would add an keyup event that validates the field, and replaces bad input something like this

$('input').bind('keyup change',function(){
$(this).attr({ value: $(this).attr('value').replace(/[^0-9]/,'').replace(/^([0-9]{4})[^1-9]+/,'$1') })
})

you can't set a "min-length", but you can validate the input whenever you want (on change, form submit, etc):

if(!input.value.test(/^\d{4}[1-9]?$/)){
   // fail
}