how to validate dynamic textbox in jquery?

Question

I want to validate dynamic textbox using jquery.Textbox value should contain alphanumeric value and it should allow special characters Underscore(_).In my scenario i have two textbox such as eg.. Name and PhoneNumber in a row.it should be created dynamically based on user requirement.I should validate each field separately to find empty field.

code:

if (_name == null || _name == '' || _name == undefined) {
                $("#lblNameError" + i).html('Please enter the  Name');
                isError = true;
            }
            //phone
            if (_phone== null || _phone== '' || _phone== undefined) {
                $("#lblphoneError" + i).html('Please entered the phone');
                isError = true;
            }

score 0 · Answer 1 · edited May 23 '17 at 12:11

I got the regular expression answer from THIS question!

Consider The Following JavaScript:

function isValid(someStringValue) {
    var regEx = /([a-zA-Z0-9_])/g;

    if(someStringValue.match(regEx).join(''))
       return true;
    else
       return false;
}

If no match is found...the value is invalid.

Also...you will get more co-operation from folks if you start marking the correct answers to your questions as "ACCEPTED". Getting answers accepted is the entire reason people are answering questions on this site.

how to validate dynamic textbox in jquery?

1 Answers1