Regex Expression

[Trupti Krishnam]

Hi I have a requirement where the string entered in the multiline text Only allow for letters, numbers, hyphens (-) and commas (,). Do not allow for spaces at the beginning or at the end and even between the character .., I m not able to write the expression for the spaces.. Can anyone help 

Thank you

[Harsh Vardhan]

@Trupti Krishnam  Try with below regex 

^[a-zA-Z0-9,-]+$

Eg: Client side scripting

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
    if (isLoading || newValue === '') {
        return;
    }
    var re = /^[a-zA-Z0-9,-]+$/ ;
    alert(re.test(newValue));  // Add further script based on your need 
}

Thanks,

Harsh

[Amit Pandey]

Hi @Trupti Krishnam 

Please try this-

^(?!.* $)(?!.*,$)(?!.*, )(?!.*- )(?!.*-,$)[A-Za-z0-9,-]+$

Kindly mark my answer helpful and correct.

Regards,

Amit

[Trupti Krishnam]

it is allowing me whitespaces in the beginning of the line and end of the line

[Amit Pandey]

Hi @Trupti Krishnam 

let input = " your,string,here ";
let trimmedInput = input.trim(); // Remove leading and trailing spaces
let regex = /^(?!.* $)(?!.*,$)(?!.*, )(?!.*- )(?!.*-,$)[A-Za-z0-9,-]+$/;
let isValid = regex.test(trimmedInput);
console.log(isValid); // This will be `true` or `false` based on your input

Can you try above approach-

Regards,

Amit