slice(start, stop)
substring(start, stop)

Common

• if start === stop, return empty string
• if stop omitted, extract start to end
• if stop > string length, use string length for stop value

Substring

• if start > stop, swap arguments
• if either start or stop are negative or NaN, treat them as 0

Slice

• if start > stop, return empty string
• if start < 0, treat it as string.length + start
• if stop < 0, treat it as string.length + start

# References

https://stackoverflow.com/questions/2243824/what-is-the-difference-between-string-slice-and-string-substring