Even though Gary Illyes, a Google analyst, believes that search engines like yahoo may count significantly less on hreflang and more on automatic language detection Down the road, for now, the tag is our best guess.  The JS redirect sounds like a certain amount of a messy condition, but to https://social40.com/story4222985/how-much-you-need-to-expect-you-ll-pay-for-a-good-hreflang-canonical