Top "Hoisting" questions

Hoisting means that local variables inside the scope of a function are treated as if they are declared at the start of the function's evaluation regardless of where they actually are declared.

javascript- Uncaught SyntaxError: Identifier * has already been declared

console.log(a) //output:ƒ a(){} var a = 1; function a(){}; var a = 10; console.log(a) //output:10 ==================== var a = 1; if(true){ function …

javascript scope var hoisting
Are variables declared with let or const hoisted?

I have been playing with ES6 for a while and I noticed that while variables declared with var are hoisted …

javascript ecmascript-6 constants let hoisting
Why a variable defined global is undefined?

I have here a simple function and a global variable. Why is myname undefined and not the string "global"? var …

javascript global-variables local-variables hoisting
Make sure a Javascript script is first to run?

I've noticed some scripts seem to be called before others on a certain page, I was wondering, what is the …

javascript hoisting operator-precedence
Are ES6 module imports hoisted?

I know that in the new ES6 module syntax, the JavaScript engine will not have to evaluate the code to …

javascript ecmascript-6 hoisting es6-modules
Why variable hoisting after return works on some browsers, and some not?

alert(myVar1); return false; var myVar1; Above code throws error in IE, FF and Opera stating that return statement has …

javascript hoisting
Javascript function scoping and hoisting

I just read a great article about JavaScript Scoping and Hoisting by Ben Cherry in which he gives the following …

javascript scope scoping hoisting
What happens when JavaScript variable name and function name is the same?

I have the following code, where I declare a function and after it, a variable with the same name as …

javascript function scope hoisting name-binding
JavaScript 'hoisting'

I came across JavaScript 'hoisting' and I didn't figure out how this snippet of code really functions: var a = 1; function …

javascript hoisting
Why does JavaScript hoist variables?

Why does JavaScript hoist variables? What was the rationale of the designers when they decided to implement hoisting? Are there …

javascript hoisting