Email validation client script (easy points)

[juan casas]

Hi experts

I have a onSubmit client script that is failing .....

my task is to verify the email format being inputted.

So for some weird reason, the code works for evaluating 1 email, and it also works in Xplore.

However, when the user inputs more than one email, the code does not work and I get a weird error message

onSubmit script error: TypeError: emailToValidate.match is not a function:
function () { [native code] }

So this is how the code works,

check if there are multiple emails by looking for a comma in the field value "cc",

if there arent' evaluated the email using the function validateEmail function

if there are multiple emails, evaluate each email using  validateEmail function

function onSubmit() {
    function validateEmail(emailToValidate) {
        var validRegex = /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/;
        if (emailToValidate.match(validRegex) && emailToValidate.split('@')[1].indexOf('.') != -1) {
            return true;
        } else {
            g_form.showFieldMsg('cc', 'Incorrect format');
            return false;
        }

    }

    var emailToValidate = g_form.getValue('cc');
    var isEmailValid = true;
    // verify if multiple emails present
    if (emailToValidate.indexOf(',') != -1) {
        // there are multiple emails present
        var arrEmails = emailToValidate.split(',');
        for (var i in arrEmails) {
            isEmailValid = validateEmail(arrEmails[i]);
            if (!isEmailValid) break;
        }
    } else {
        isEmailValid = validateEmail(emailToValidate);
    }
    return isEmailValid;

}

[Aman Kumar S]

use test function.

your_reg_ex.test(your_string)//returns true or false

[Allen Andreas]

Hello,

It's not really necessary or appropriate to state in your question topic about "points easy", "medium points", etc. Your question topic itself is what helps drive responses and is important, not baiting in point chasers.

For some reason, you've developed a habit of doing this as it's in almost all of your question posts.

If it's easy, then in theory you could search and work on the result. It's a bit confusing how you're having the issue, but then gauging and telling the Community that it's "easy points".

Besides all that, it's recommended to review this article for assistance: https://community.servicenow.com/community?id=community_article&sys_id=243449861be230d017d162c4bd4bc...

[juan casas · Accepted solution]

this is what worked::

function onChange(control, oldValue, newValue, isLoading, isTemplate) {
    if (isLoading || newValue === '') {
        return;
    }

    function validateEmail(emailToValidate) {
        /*
        Email validation rules:
        emails cant have commas
        email should only have 1 @
        email should only have 1 . after @
        */

        var isATPresent = emailToValidate.indexOf("@");
        if (isATPresent == -1) return false;

        var areMultipleATSPresent = emailToValidate.split("@").length != 2;
        if (areMultipleATSPresent) {
            g_form.showErrorBox("cc", "Incorrect format");
            return false;
        }

        var userName = emailToValidate.split("@")[0];
        var mailServer = emailToValidate.split("@")[1];

        var isPeriodPresent = mailServer.indexOf(".");
        if (isPeriodPresent == -1) {
            g_form.showErrorBox("cc", "Incorrect format");
            return false;
        }

        var areMultiplePeriodsPresent = mailServer.split(".").length != 2;
        if (areMultiplePeriodsPresent) {
            g_form.showErrorBox("cc", "Incorrect format");
            return false;
        }

        return true;
    }

    function validateEmailString(emailToValidate) {
        // split multiple emails if more than 1 email is present
        var areMultipleEmailsPresent = emailToValidate.includes(",");
        if (areMultipleEmailsPresent) {
            var arrEmails = emailToValidate.split(",");
            for (var i =0 ; arrEmails.length > i ; i++) {
                 
                if (!validateEmail(arrEmails[i])) {
                    g_form.showErrorBox("cc", "Incorrect format");
                    return false;
                }
            }
        } else {
            if (!validateEmail(emailToValidate)) {
                g_form.showErrorBox("cc", "Incorrect format");
                return false;
            }
        }
            return true;
        
    }

    var emailToValidate = newValue;

    validateEmailString(emailToValidate);

}