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    This is an experimental technology
    Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

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


    escapedStr = CSS.escape(str);


    The DOMString to be escaped.


    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')              // InvalidCharacterError

    In context uses

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

    var 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:

    var element = document.querySelector('a[href="#' + CSS.escape(fragment) + '"]');


    Specification Status Comment
    CSS Object Model (CSSOM)
    The definition of 'CSS.escape()' in that specification.
    Working Draft Initial definition.

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support Not supported
    (Chromium bug #331218)
    31 (31) [1] Not supported Not supported Not supported
    Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support Not supported 31.0 (31)[1] Not supported Not supported Not supported

    [1] Minor changes has been made in Firefox 32, to match the spec and the evolution of the CSS syntax. The identifier now can begins with '--' and the second dash must not be escaped. Also vendor identifier are no more escaped.

    See also

    Document Tags and Contributors

    Contributors to this page: fscholz, teoli, ziyunfei, cvrebert
    Last updated by: fscholz,