javascript - Jquery Regex for KeyUp event for an input box with a range numeric value -

i'm having spent several hours trying find way haven't been successful. want add keyup/keypress event accept value between 2 - 1827. i'm using aspx inputbox , here's have.

$('#field_txt').keyup(function () {             var regex = /[^2-9]|[^1-9][^0-9]|[^1-9][^0-9][^0-9]|[^1][^0-8][^0-2][^0-7]/;             var myregexp = /^([1-9]|1[0-9]|1[0-9][0-9]|[1-9][0-9][0-9]|1[0-8][0-2][0-7])$/g;               if (!this.value.match(myregexp)) {                 this.value = this.value.replace(regex, '');             }         }); 

if use regex expression, when user input 1 -19, doesn't work since expression matches false , value replace ''. however, if use 2nd regexp, use able enter 1.

i have looked @ other examples posted. html text input allow numeric input

thanks in advance.

regex seems hardest way possible accomplish this. following ensures entry both numeric , within range. field after you...

$('#field_txt').keyup(function() {     var val = $(this).val();     var is_numeric = /^\d+$/gi.test(val);     if (is_numeric) {         var val = parseint(val);         var within_range = (val >= 2 && val <= 1827);     }     if  (!is_numeric || !within_range) {         $(this).val(/* insert whatever value want here */);     } });