WorkerGlobalScope: languagechange event

在此页

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

可以使用 languagechange event in an addEventListener 方法：

worker.addEventListener('languagechange', function() {
  console.log('languagechange event detected!');
});

或使用 onlanguagechange 事件处理程序特性：

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

规范	状态
HTML 实时标准 The definition of 'languagechange' in that specification.	实时标准

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