Regex to check password validation -

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this question has answer here:

i have refered, srinivas's answer make password validation. regex minimum 8 character, 1 number, 1 alphabet , 1 special character 

"^(?=.*[a-za-z])(?=.*\d)(?=.*[$@$!%*#?&])[a-za-z\d$@$!%*#?&]{8,}$"

with regex, can use following special characters. $@$!%*#?& . if use dheepan~123 or dheepan.123 vaildation fails. how can allow special characters?

you can allow special char using \w i'm not sure want this... anyway:

^(?=.*[a-za-z])(?=.*\d)(?=.*[\w])[\w\w]{8,}$

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