Help with if statement

[Victor Warner]

I wish to create a script to deal with the following where the document contains two email fields:

1. if only one email field (“email”) has an email address the script assigns to a variable just that email fields contact; but
2. 2. if both email fields (“email” and “econd_individual_email”) have email addresses then the script assigns to a variable the following: “email_field_1 = ” and ” + email_field_2″
using an if statement testing whether another field (second_individual_client_name) contains anything.

It works fine when the other field (“second_individual_client_name”) contains data but generates an error when it does not.

The script is as follows:

var client_name = record.getFieldValue('fld-ffa7651ff5bd48a9aa8184a69be8550e');
var email = record.getFieldValue('fld-152d99920304499f8f89c3868eb144d1');
var second_individual_client_name = record.getFieldValue('fld-772ee93b5eb747d294e5a9a7b548ebda');
var second_individual_email = record.getFieldValue('fld-d09998df75864a0e8f82b6f61188b537');

// set email for prescribed information document

if (second_individual_client_name.length===0){
var email_for_prescribed_information = email;
} else {
var email_for_prescribed_information = email + " and " + second_individual_email;
}

console.log(client_name + "\n" + email_for_prescribed_information);

The error message generated is:

New Script: TypeError: undefined is not an object (evaluating 'second_individual_client_name.length'), line:(null)

Any help would be gratefully received.

[Daniel Leu]

I would just do

if (second_individual_client_name){
   var email_for_prescribed_information = email + " and " + second_individual_email;
} else {
   var email_for_prescribed_information = email;
}

[Sam Moffatt]

To expand a little, second_individual_client_name.length===0 is failing because if the field isn’t set to a string value, it’s an undefined value or null. The .length only works if second_individual_client_name is set to a string but if the field isn’t entered, Tap Forms returns a null/undefined value to signify the difference between a field with an empty string and a completely unset field.

Javascript has the concept of “falsy” values that are values that evaluate to “false” when used in an if test situation. In this case not only is null and undefined a “falsy” value, but an empty string is also a falsy value. This means that for your purposes, that is to say to check if the field has a value, this simple if test does what you need without validating the length.

[1] falsy: https://developer.mozilla.org/en-US/docs/Glossary/Falsy

[Victor Warner]

Daniel, thank you for the solution.

Sam, thank you for the explanation.

Query: how is it possible to get the red text within a paragraph of a post?

[Sam Moffatt]

Use backticks to surround the text and it will automatically do the preformatted text with the colouring if there is no new line. If there is a new line it’ll change behaviour in the text as you had in the original post.

[Author]

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