CaretRangeFromPoint() Alternative

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Im working on my own project and i use this in my feature to get the word specific in the textarea value just one click, and i see this "Non-standard" and i see this in my React

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but in vanilla js it looks not deprecated

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My questions is, Is there any method of how can i get a word in a value of textArea in just one click? since this CaretRangeFromPoint() is not a good thing to use based on the documents if am right.