javascript - When is html languagechange event fired in the browser?

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javascript - When is html languagechange event fired in the browser?

posted Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - When is html languagechange event fired in the browser?

I am trying to add localization in a simple web app. There is a languagechange event as per Mozilla docs.

My questions is:

when is this event actually fired?

Here is what I tried.

page html tag has lang attribute <html lang='ar-SA'>
user can use some dropdown to switch to another language.
the dropdown, changes the lang attribute on html tag to the desired lang

I was hoping that changing lang attribute on root html tag will fire the languagechange event, which in turn I can use to load the content in new lang, but it does not.

Did I miss something obvious here?

question from:https://stackoverflow.com/questions/65867093/when-is-html-languagechange-event-fired-in-the-browser

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1 Reply

深蓝 · Answer 1 · 2021-10-06T19:24:28+0000

The languagechange event is fired at the global scope object when the user's preferred language changes.

window.onlanguagechange = function(event) {
  console.log('languagechange event detected!');
};

Check your Browser compatibility

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javascript - When is html languagechange event fired in the browser?

javascript - When is html languagechange event fired in the browser?

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