Скачать или смотреть Blocks and Scope in JavaScript, ES6 Blocks and Scope on Codecademy, Learn to Code, Learn to Program

In this JavaScript lesson we look at Blocks and Scope in JavaScript, ES6 Blocks and Scope on Codecademy, Learn to Code, Learn to Program. Here we go into depth regarding code blocks. We are reminded that we have seen blocks before in the function section as well in if conditionals. We are told that a code block is found inside of the set of curly braces. We use blocks to help group one or more statements and they serve as important structural markers of our code. A code block can be a function or even the part of an if condition that runs if the condition is true is also a code block. In the next lessons, we will look more at how blocks help us define the scope of our variables. Where a variable is declared and initialized will matter in what other parts of our code those variables will be accessible.