regex for testing "\" in string -


this question has answer here:

why regexp returns false for

/[\\]/igm.test('asdasdasd\asdasd');

and true 

/[\\]/igm.test('asdasdasd\\asdasd');

and when try gives error, why..?

/[\\]/igm.test('abc\xyz');

\x character escape ascii character, next 2 characters must hexidecimal digits. so, \xyz invalid because y , z aren't hex digits.


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