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Chalarangelo
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blog_posts/javascript-merge-arrays.md
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@ -53,5 +53,3 @@ const concatAb = [].concat(a, c); // [1, 2, 3, 'hi']
As you can see in the above example, the spread operator either throws an error or doesn't output the correct result when passed a non-iterable object. `Array.prototype.concat()` on the other hand has no trouble being passed mixed input.
So what's the verdict? Use the spread operator (`...`) whenever you know your inputs are arrays, as it performs better and is easy to read and understand. Favor `Array.prototype.concat()` when you are uncertain of one or more of the inputs and do not want to add additional checks, as it handles those cases more gracefully.
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