identifier has already been declared javascript
// This problem can occur for many reasons
// It cannot be resolved without seeing code because it can happen for
// different reasons
But it is worth having a look at
1.If you are doing code in console then keep in mind that:
`let` and `const` variables, by design, can't be redeclared.
When you write console code, you're writing it all in
the same scope, even if you hit enter and write more
code again. Because of this, you're re-declaring them,
breaking this rule, and causing an error.
Things you can do:
1. use `var`. Not always convenient, especially if copy-pasting code
reload the page/console. Similarly, not always convenient if you want to
maintain whatever state your page currently has
2. rename your variables. Depending on how many variables you have,
can be annoying, especially for copy-paste code.
3. remove `let` after the first run, simply re-defining
the value instead of re-declaring the variable.
If you're re-using the same code again and again,
this at least becomes a change you only need to make once.
4. wrap your code in a block {...}. Less inconvenient,
but works since `let` and `const` are block scoped and
they won't be creating declarations in the global scope
that can't be overritten by similarly named declarations.
The problem with this is that you won't be able to access your
variables if you try to enter a new console command since they
don't exist in that scope.