Given

const localName = "local_name";
delete localName; // true
console.log(localName); // "local_name"

Is it possible to delete a variable declared using const?

Given

const localName = "local_name";
delete localName; // true
console.log(localName); // "local_name"

Is it possible to delete a variable declared using const?

• javascript

• 1 Nö its not possible do delete or redefine a constant inside the constants scope – cyr_x Commented Feb 23, 2017 at 19:02
• 3 From stackoverflow./questions/1596782/…: "The point is the delete operator removes a property from an object. It cannot remove a variable." So the answer is no (independently of whether const, var or let was used). – Felix Kling Commented Feb 23, 2017 at 19:02
• 1 perfectionkills./understanding-delete – Bergi Commented Oct 11, 2017 at 17:17

1 Answer 1

delete is used to delete properties from an object.

delete foo;

will try to delete the property foo from the global object. Declared variables can never be removed with delete (no matter if you use const, let or var), and there is no other way to remove a "variable" (binding) (see @T.J.'s ment for some more details).

Related: How to unset a JavaScript variable?