this post was submitted on 05 Sep 2023
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You can put any type of value in an array in JavaScript. You can have numbers, strings, booleans, arrays, and objects. So what should the default sort function sort by? Sorting by numbers makes sense, but what if it wanted to sort strings instead?
When you don't know what value is in an array ahead of time you can't assume how to sort it. When you're controlling the program you can provide a sort function for the type of values you know will be in it, but when you're writing the standard default sort function, there's only one type that you can convert all the other types to safely and simply in the most predictable way, which is strings.