What does the string command mean? And how is it related to boolean?

Question

What does the string command mean? And how is it related to boolean? I started learning Javascript. At the end of the second training module there was a question for which I could not find a logical explanation. My knowledge of previous lessons is not enough to answer correctly. I used the tips, but there is no understanding. Help! If possible, explain how these types are related.

Answer 1

They want the datatype of the variable.
A variable can have different datatypes, it can be an integer(a whole number)
or a string("multiple characters")
You should learn something about datatypes. In other languages like java you have to explicitly instantiate a variable of type string as: String varName = "";
and an integer(number) would be: int varName = 0;

but in javascript you can just say var varName = someThing.
Javascript will detect the dataType for you.

So learn datatypes. They are used in all the programming languages. its a basic thing you need to understand :)

Answer 2

A String is a datatype. so if you make a variable in javascript and set it to a string, ie:
var testString = "This is a string";

If a variable is a string you can call the String methods on it. like:
testString.length;
testString.indexOf("is"');
https://www.w3schools.com/js/js_string_methods.asp

I dont see how its related to boolean..

Answer 3

Here is an example of a question that I had to answer.

Please type in the comments for the data listed below:

12//number
"some text" //_____
true//_______

The correct answer was to introduce:
string
boolean

What is the connection between this?

Answer 4

Many thanks for the full and complete answer.