I'm searching for a regex pattern that can identify numbers within the range of 0.5 to 24, excluding cases like 0,5 or 22,5. The current pattern I'm using is:
/^(([0-9]|1[0-9]|2[0-3])([^,])(\.(0|5)))$/
Despite having excluded the comma ,, it still manages to capture cases like 22,5. Any suggestions or feedback would be greatly appreciated. Thank you!
To restrict the input to only include a dot and make the last capture group optional, use the following expression:
/^([0-9]|1[0-9]|2[0-3])(\.[05])?$/
(\.[05])? <- By using the ? symbol, this allows for one or zero occurrences of the second capture group.
If you're looking to incorporate regular expressions, this pattern should meet your requirements.
^((0\.[5-9])|(([1-9](\.[5-9])?)|(1[0-9](\.[5-9])?)|(2[0-3](\.[5-9])?)|24))$
Feel free to test it out here
However, if your aim is to validate a range, I recommend utilizing regular expressions solely for initial validation, then converting and using plain Javascript for further validation.
var validator = function(value) {
var regexp = /^-?\d+(\.\d{0,2})?$/;
var isNumber = regexp.test(value);
if (isNumber) {
var parsed = parseFloat(value);
if (0.5 <= parsed && parsed <= 24)
console.log("The number " + parsed + " is within range");
else
console.log("The number " + parsed + " is NOT within range");
} else {
console.log("The value " + value + " is NOT even a valid decimal value");
}
}
validator("-3");
validator("19.6");
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