No, they are not “initialized with the value of undefined”.

Above we create a new identifier called declaration. In JavaScript, variables are initialized with the value of undefined when they are created. What that means is if we try to log the declaration variable, we’ll get undefined.
When to use var vs let vs const in JavaScript
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Tyler McGinnis
Bob Myers
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1 min read·
Jan 9, 2019
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No, they are not “initialized with the value of undefined”. They are not initialized at all, and so are undefined.
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Written by Bob Myers268 Followers
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Technologist, writer, Japanologist
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