Answers for "regex101 any number javascript"

regex match number javascript

str = "hello123!"	
str.match(/(\d+)/)[1]	//Best way to find first matching number in string ;)

regex match any number

For matching an integer number of one single char/digit, specify:
[0-9]
But for matching any number of more than one char/digit; add "+":
[0-9]+
Example for matching hour with minutes of HH:MM format in a file:
grep "[0-9]\+\:[0-9]\+" file.txt