Understanding JavaScript Closures | Techshard

Closures can be quite tricky to understand especially for beginners. They are one of the most powerful features of JavaScript but they cannot be properly exploited without understanding them.

Closures are objects that contain a function and a reference to the environment in which the function was created. They are language construct, which allows to preserve the state of the variables and so prolong the scope.

Let’s look at a basic example:

Screen Shot 2017-10-31 at 21.32.20

Here, the function reference variable…

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