Ok so a little on this. I am going to ignore var for this it's special and for another time.
So let's talk about block scope. When I am writing something in a file there is a global level outside all functions, once I enter a function I am inside the scope of that function, however it doesn't end there, say I enter a statement block like if (something) { statement block scope } now comes the interesting part...
const unicorn = "unicorn";
console.log(unicorn); //unicorn
if (true) {
// Scoping allows for variable shadowing
const unicorn = "differentUnicorn";
console.log(unicorn); // differentUnicorn
const rainbows = "RAINBOW";
console.log(rainbows); // "RAINBOW"
}
function hellowWorld() {
const helloWorld = "MyName"; // 'helloWorld' is declared but its value is never read.
}
console.log(helloWorld); // helloWorld is not defined
console.log(rainbows); // rainbows is not defined
For further actions, you may consider blocking this person and/or reporting abuse
Ok so a little on this. I am going to ignore
varfor this it's special and for another time.So let's talk about block scope. When I am writing something in a file there is a
globallevel outside all functions, once I enter a function I am inside the scope of that function, however it doesn't end there, say I enter a statement block likeif (something) { statement block scope }now comes the interesting part...