How to accept minimum length and maximum length of a string from the user

[Pratiksha Lang1]

How to accept minimum length and maximum length of a string from the user

I have written a OnChange Catalog client script for the same. This script works fine if I want to accept length 10, In this I also want to accept it if length is 4. I want it to accept both length 10 and 4, if it is not 10 or 4 then it should throw an error.

function onChange(control, oldValue, newValue, isLoading) {
if (isLoading || newValue == '') {
return;
}var letterNumber = /^[0-9a-zA-Z]+$/;

if(!(newValue.match(letterNumber)) || newValue.toString().length>10 || newValue.toString().length<10)
{
alert('It accepts only 10 digits or character');
g_form.setValue('vehicle_registration_no', '');

}

[Pratiksha Lang1]

I want to do it with the help of regex

[Sohail Khilji]

what validation do you want to do with Regex, its not mentioned in your question ? are you trying to exempt special char ?

[sanket16 · Accepted solution]

Hi @Pratiksha Lang1 

Please try below code:

---------------------------------------------

var regexcheck=/^[A-Za-z0-9]*$/.test(newValue);
len=newValue.toString().length;
if(regexcheck &&(len==4 || len==10 )){
//do nothing
}else{
alert("Your error msg");
}

[Sai Kumar B]

@Pratiksha Lang1 

Try using regex

var regexcheck=/^[A-Za-z0-9]*$/.test(newValue);
var minLengthCheck = /^[a-zA-Z]{4}$/.test(newValue); //Regex to check minimum length
var mxLengthCheck = /^[a-zA-Z]{10}$/.test(newValue); //Regex to check maximum length

if(regexcheck && (minLengthCheck  || mxLengthCheck )){
//do nothing
}else{
alert("error msg");
g_form.clearValue('vehicle_registration_no');
}

[Arava Gopi]

Hi Pratiksha,

Please try the below code...

function onChange(control, oldValue, newValue, isLoading) {
if (isLoading || newValue == '') {
return;
}
var letterNumber = /^[0-9a-zA-Z]+$/;
if (newValue.match(letterNumber) != null) {
if (newValue.toString().length != '10' && newValue.toString().length != '4') {
g_form.setValue('vehicle_registration_no', '');
alert('It accepts only digits or character with length of 4 or 10');//Change the alert message accordingly
}
}
else{
alert("Please Enter Digits or Characters only, Vehicle Number won't accepts special characters");
}
}

Thanks & Regards,

Gopi