String.prototype.split() — Using split()
When the string is empty and a non-empty separator is specified, split() returns [""].
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When the string is empty and a non-empty separator is specified, split() returns [""]. If the string and separator are both empty strings, an empty array is returned.
The following example defines a function that splits a string into an array of strings using separator. After splitting the string, the function logs messages indicating the original string (before the split), the separator used, the number of elements in the array, and the individual array elements.
This example produces the following output
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MDN Web Docs — files/en-us/web/javascript/reference/global_objects/string/split/index.md :: Using split() ↗Revision d14bee540b53 · CC-BY-SA-2.5