Splitting a string into an array

Use .split to go from strings to an array of the split substrings:

var s = "one, two, three, four, five"
s.split(", ");  // ["one", "two", "three", "four", "five"]

Use the array method .join to go back to a string:

s.split(", ").join("--");  // "one--two--three--four--five"

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