What is the method to change a string that has commas separating its values into an array?

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The method to change a string that has commas separating its values into an array is to use the split() method in JavaScript.

Here's an example:

let str = "apple,banana,orange";
let arr = str.split(",");
console.log(arr); // Output: ["apple", "banana", "orange"]

In this example, the split() method is used on the string "apple,banana,orange" with the separator ,. This splits the string into an array of 3 values, which are "apple", "banana", and "orange". The resulting array is stored in the variable arr.