A(n) is a sequence of characters that in some languages can be considered as one data value.

A string  is a sequence of characters that in some languages can be considered as one data value.

Explanation:

Strings are used in programming. From the question, the Javascript programming language is a good place where strings are used.  In Javascript, the string is part of the data types. Strings can be both capital and lowercase letters, single or double quotes, spaces. Every string stores a particular value of data.

For example, in Javascript, when you:

console.log('The sky is ' + 'blue.')

It prints: 'The sky is blue.'

The string above is (').

The computer will join the strings.