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This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.


The language.direction property returns the direction (ltr or rtl) of the currently active language.


var languageCode = navigator.mozL10n.language.direction;


Returns the direction of the currently active language (ltr or rtl).


navigator.mozL10n.ready(function() {
  console.log('The current language's direction is ' + navigator.mozL10n.language.direction);


Not part of any specification.

See also

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Contributors to this page: gandalf, chrisdavidmills, stasm
Last updated by: gandalf,