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CSS: escape() static method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨January 2020⁩.

The CSS.escape() static method returns a string containing the escaped string passed as parameter, mostly for use as part of a CSS selector.

Syntax

CSS.escape(str)

Parameters

str: The string to be escaped.

Return value

The escaped string.

Examples

Basic results

CSS.escape(".foo#bar"); // "\\.foo\\#bar"
CSS.escape("()[]{}"); // "\\(\\)\\[\\]\\{\\}"
CSS.escape('--a'); // "--a"
CSS.escape(0); // "\\30 ", the Unicode code point of '0' is 30
CSS.escape('\0'); // "\ufffd", the Unicode REPLACEMENT CHARACTER

In context uses

To escape a string for use as part of a selector, the escape() method can be used:

const element = document.querySelector(`#${CSS.escape(id)} > img`);

The escape() method can also be used for escaping strings, although it escapes characters that don't strictly need to be escaped:

const element = document.querySelector(`a[href="#${CSS.escape(fragment)}"]`);

Specifications

Specification
CSS Object Model (CSSOM)> # the-css.escape()-method>

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	WebView Android	WebView on iOS
`escape_static`	46	79	31	33	10.1	46	31	33	10.3	5.0	46	10.3