How can double quotes be added to strings within an array?

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Double quotes can be added to strings within an array by using the escape character "\" before the double quote.

For example:

let myArray = ["Hello", "World", "John said \"Hi there!\""]

In this example, the third element in the array contains double quotes within the string. By using the "\" character before the double quotes, they are treated as part of the string rather than ending the string prematurely.