(Using strings in JavaScript)
In JavaScript, a string is just a series of characters. Strings can include both text and numbers and are always contained within single or double quotes.
(Example)
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.
(Example)
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.
(Example)
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.
(Example)
var x = "FastField";
var y = x.length;
return y;
9
For more information about strings, you can read this article:
http://www.w3schools.com/js/js_strings.asp