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The Differences Between Let and Var
var is a slightly different and here I'm going to read this out and we'll see if we can interpret it. Variables declared by let are only available inside the block that they are defined. Whereas variables declared by var are available throughout the function in which they're declared. If you start mixing and matching let in bars, it's just going to be kind of chaos all over the place. Okay. So like you said, there's global scope and local scope. Let and let and cons are both kind of locally scoped where if they're declared within curly braces, you can use them whatever,. But if they're declaration outside of the curly braces, then they're globally scoped