Phone Number Word Decoder

JavaScriptHardformattinglanguage_fundamentalsstringsregex

Instructions

Create a program that converts a phone number with letters to one with only numbers.

Number	Letter
0	none
1	none
2	ABC
3	DEF
4	GHI
5	JKL
6	MNO
7	PQRS
8	TUV
9	WXYZ

Examples

textToNum("123-647-EYES") ➞ "123-647-3937"

textToNum("(325)444-TEST") ➞ "(325)444-8378"

textToNum("653-TRY-THIS") ➞ "653-879-8447"

textToNum("435-224-7613") ➞ "435-224-7613"

Notes

All inputs will be formatted as a string representing a proper phone number in the format XXX-XXX-XXXX or (XXX)XXX-XXXX, using numbers and capital letters.

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Walks through the solution with reasoning and edge cases.