I have a series of numbers in my string, and I want to select them with RegEx. Though, if a certain sequence of numbers are preceded by ' @
' character(without quotations), then it should skip it. I do not know how should I solve it in Javascript.
I know I should use Lookahead to check the condition: (?!@[az])
But the above rule is used only to NOT select the numbers preceded by @, what about selecting those which are not preceded by @
? I need to say to RegEx to skip @\\d
and rather select only (?!@\\d)
. How should I do this?
For instance I have this string:
helloMrRobert5555AndGoodByeMrSteve@8888
Expected output:
5555
I think you can use a simple regex like this (if the length of number is fixed):
/[^@](\d{4})/g
And use substitution $1
.
If the length is not fixed use /@\\d+|(\\d+)/g
.
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