The initial language code value is detected through navigator.language and saved locally in the browser in localStorage. If the browser does not support navigator method, the initial language will be English. The stored code is used to access languages object, which contains translations texts from /locales directory. The translations are inserted into document elements by data-translation attribute, which contains the key(s) to access the corresponding text.
translation.language: Returns the locally stored language code.translation.get: Returns the translation text based on the translation key passed as a parameter. It searches for the text in the current translation object. If nested translation, the key is slitted by dot (.) character and looped to access the text.translation.translateElements: Selects document elements and translate its properties, such as metadata and accessibility ones.translation.change: Changes language only if the selected language is different from the current one. Updates the stored language code and rerun methods to update texts. Alerts screen readers about the change.translation.init: Gets the preferred browser's language, stores it locally and refreshes the page to apply the translation. Updates lang metadata. Selects all document elements that containsdata-translationattribute and set its translation text. Rerun methods to update texts. Attachestranslation.changemethod to elements responsible for language switching.