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refactor promise, geneerators, global object

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Ilya Kantor 2019-02-28 00:56:39 +03:00
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1-js/06-advanced-functions/04-var/article.md
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@ -182,4 +182,4 @@ There are two main differences of `var`:
There's one more minor difference related to the global object, we'll cover that in the next chapter.
These differences are actually a bad thing most of the time. First, we can't create block-local variables. And hoisting just creates more space for errors. So, for new scripts `var` is used exceptionally rarely.
These differences are actually a bad thing most of the time. Block-level variables is such a great thing. That's why `let` was introduced in the standard long ago, and is now a major way (along with `const`) to declare a variable.