How to testing match escape characters in string?

Question

What to need:

/^\888$/g.test('\888')

\888 = true

888 = false

console.log(/^888$/g.test('888'));

console.log(/^888$/g.test('\888'));

"888" === "\888" must be = false. "888" === "888" must be = true — Юрий Светлов, Apr 20 '19 at 17:35

score 1 · Answer 1 · answered Apr 20 '19 at 17:30

1

You are escaping the first 8, you need to escape the \.

console.log(/^888$/g.test('888'));

console.log(/^888$/g.test('\\888'));

answered Apr 20 '19 at 17:30

Get Off My Lawn

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Thank you, but no. It is "\\" - how new symbol "\". – Юрий Светлов Apr 20 '19 at 17:32

score 1 · Accepted Answer · answered Apr 20 '19 at 17:41

The backslash \ is reserved for use as an escape character in JavaScript.To use a backslash literally on your regex or any where for string operation, you need to use two backslashes e.g \\

That's why console.log('888' === '\888') returns true because '\8\8\8' is actually '888'

console.log('888' === '\888')
console.log('\888' === '\8\88')

How to testing match escape characters in string?

2 Answers2