var x = "FastField";
You can add strings together, however if there is at least one string, it will concatenate (combine side by side) as opposed to mathematically adding them.
var x = "FastField_"; var y = 'Mobile_Forms'; return x + y; FastField_Mobile_Forms
As we mentioned before, numbers can be strings too, but they do not function as they normally would when put in quotations.
var x = "123"; var y = '456'; return x + y; 123456
You can also find the length of any text using the built in, “.length” property.
var x = "FastField"; var y = x.length; return y; 9
For more information about strings, you can read this article: