regex.js

\s matches any white Space**** 
\. = anything goes 


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Quantifers Modify Char Prior to it 
*= 0
+=1
?= Matches 0 or 1 of the preceding token, effectively making it optional.
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Position ^ beginning of  ^\w     (All the first words of the line.  (^\w
$= End of. 
\b = between words*

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Meta-chars
charater class [abc] brackets act as || operator
(example-  l[yi]nk  will find link and lynk 
when put in brackets means literal [abc]
if you need to search for something that is used as symbol ESC with \.
searches for literally a . and not everything. 
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\ ( ?\ d { 3 } [-.) ] \ d { 3 } [-.] \ d { 4 } 
translation

look for a literally open \( optionally ? followed by 3 digits.  followed by a literal . or ) or - followed
by 3 digits  followed by a literal . or ) or - followed by 4 digits 


if dash is not first charater*** then it means through like 4-9 1-10 etc. 


same goes with ^ if it is the first char is inside of brackets then it MEANS IS NOT

example 

[^A-Z] means is NOT A-Z
if in middle like this      [A^B] looking for literal char.