Chrome DevTools Console declare const variable twice not working All In One

Chrome DevTools Console declare const variable twice not working All In One

redeclare const variable

Uncaught TypeError: Assignment to constant variable. ❌

const arr = ['9', '1', '3', '7', '12', '37', '23'];

// reassignment ❌
arr =  [9, 1, 3, 7, 12, 37, 23];

// Uncaught TypeError: Assignment to constant variable.

solution ✅

redeclare const is OK ✅, but reassignment const is totally Wrong ❌.

const arr = ['9', '1', '3', '7', '12', '37', '23'];

// redeclare ✅
const arr =  [9, 1, 3, 7, 12, 37, 23];

wrong double redeclare way, no meanings at all!

You can’t redeclare let variables in the same scope in a JavaScript program, this is the designed behavior, it won’t work anywhere.

let name = 'Jack';`
let name = 'John';
// Uncaught SyntaxError: Identifier 'name' has already been declared

let name = 'Jack';

let name = 'John'

https://forum.freecodecamp.org/t/declare-with-let-in-chrome-bug/354865

Support for const redeclarations in the Console

Chrome 92

https://developer.chrome.com/blog/new-in-devtools-92/#const-redeclaration

https://developer.chrome.com/blog/new-in-devtools-103/

refs

https://stackoverflow.com/questions/68355442/javascript-let-double-declaration

https://stackoverflow.com/questions/57513857/is-there-any-way-to-re-assign-a-const-in-chrome-devtools

https://groups.google.com/g/google-chrome-developer-tools/c/yxQxiqS8b0w/m/1mwTSCZVAgAJ

https://blog.pragmatists.com/let-your-javascript-variables-be-constant-1633e56a948d

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