[pve-eslint.git] / eslint / docs / rules / no-octal-escape.md

# disallow octal escape sequences in string literals (no-octal-escape)

As of the ECMAScript 5 specification, octal escape sequences in string literals are deprecated and should not be used. Unicode escape sequences should be used instead.

```js
var foo = "Copyright \251";
```

## Rule Details

This rule disallows octal escape sequences in string literals.

If ESLint parses code in strict mode, the parser (instead of this rule) reports the error.

Examples of **incorrect** code for this rule:

```js
/*eslint no-octal-escape: "error"*/

var foo = "Copyright \251";
```

Examples of **correct** code for this rule:

```js
/*eslint no-octal-escape: "error"*/

var foo = "Copyright \u00A9";   // unicode

var foo = "Copyright \xA9";     // hexadecimal
```
Commit	Line	Data
eb39fafa DC	1	# disallow octal escape sequences in string literals (no-octal-escape)
	2
	3	As of the ECMAScript 5 specification, octal escape sequences in string literals are deprecated and should not be used. Unicode escape sequences should be used instead.
	4
	5	```js
	6	var foo = "Copyright \251";
	7	```
	8
	9	## Rule Details
	10
	11	This rule disallows octal escape sequences in string literals.
	12
	13	If ESLint parses code in strict mode, the parser (instead of this rule) reports the error.
	14
	15	Examples of incorrect code for this rule:
	16
	17	```js
	18	/eslint no-octal-escape: "error"/
	19
	20	var foo = "Copyright \251";
	21	```
	22
	23	Examples of correct code for this rule:
	24
	25	```js
	26	/eslint no-octal-escape: "error"/
	27
	28	var foo = "Copyright \u00A9"; // unicode
	29
	30	var foo = "Copyright \xA9"; // hexadecimal
	31	```