JavaScript ES6 - var, let and const

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This video we will talk about the three ways you can now declare variables in JavaScript ( var, let and const ). We'll discuss their differences and similarities and show some use cases for each!
  1. Nodecasts
  2. programming
  3. javascript
  4. web
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Комментарии
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Beautifully explained, this was the 2nd video I saw on the new feature of es6.. First one did mention about let keyword, but forgot add the simple point of change in scope level. Better than the newboston . Thank you!!

akshaysarkardbit
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Nice run-down here, man. Appreciated!

willsi
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Great explanation, didn't need to re-play.

Hufsa
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const foo IS immutable. 'foo' is a pointer/reference to the object. It doesn't mean the object it points to is immutable, just that the reference is. For that, you would need a library to wrap access or a function/prototype with inner functions controlling access. AKA: Encapsulation . Still, educational.

For java guys:
const foo <==> final Object foo;
let foo <==> (Java's natural scoping)

sideswipe
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Almost everybody misses out to say that "let" and "const" variables are not hoisted but "var" is hoisted .

whoispankaj