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string with backslash is "1\\2"
"1\2" is 1 and \2  
Error: Octal escape sequences are not allowed in strict mode.
without strict mode match returns null
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YNataly 2017-10-18 21:56:37 +03:00 • committed by GitHub
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5-regular-expressions/04-regexp-escaping/article.md
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@ -30,7 +30,7 @@ alert( "function g()".match(/g\(\)/) ); // "g()"
If we're looking for a backslash `\`, then we should double it: If we're looking for a backslash `\`, then we should double it:
```js run ```js run
alert( "1\2".match(/\\/) ); // '\' alert( "1\\2".match(/\\/) ); // '\'
``` ```
## A slash ## A slash