jsx-quotes.md

title	rule_type	related_rules
jsx-quotes	layout	quotes

JSX attribute values can contain string literals, which are delimited with single or double quotes.

<a b='c' />
<a b="c" />

Unlike string literals in JavaScript, string literals within JSX attributes can’t contain escaped quotes. If you want to have e.g. a double quote within a JSX attribute value, you have to use single quotes as string delimiter.

<a b="'" />
<a b='"' />

Rule Details

This rule enforces the consistent use of either double or single quotes in JSX attributes.

Options

This rule has a string option:

• "prefer-double" (default) enforces the use of double quotes for all JSX attribute values that don't contain a double quote.
• "prefer-single" enforces the use of single quotes for all JSX attribute values that don’t contain a single quote.

prefer-double

Examples of incorrect code for this rule with the default "prefer-double" option:

:::incorrect { "ecmaFeatures": { "jsx": true } }

/*eslint jsx-quotes: ["error", "prefer-double"]*/

<a b='c' />

:::

Examples of correct code for this rule with the default "prefer-double" option:

:::correct { "ecmaFeatures": { "jsx": true } }

/*eslint jsx-quotes: ["error", "prefer-double"]*/

<a b="c" />
<a b='"' />

:::

prefer-single

Examples of incorrect code for this rule with the "prefer-single" option:

:::incorrect { "ecmaFeatures": { "jsx": true } }

/*eslint jsx-quotes: ["error", "prefer-single"]*/

<a b="c" />

:::

Examples of correct code for this rule with the "prefer-single" option:

:::correct { "ecmaFeatures": { "jsx": true } }

/*eslint jsx-quotes: ["error", "prefer-single"]*/

<a b='c' />
<a b="'" />

:::

When Not To Use It

You can turn this rule off if you don’t use JSX or if you aren’t concerned with a consistent usage of quotes within JSX attributes.