Conditional formatting (with JavaScript) doesn't work anymore

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The <script> will be executed every time, you go to the next card, but in the same context.

If you use a let assignment with the same identifier (quoteanswer in this case) multiple times, JavaScript will complain, that "quoteanswer has already been defined".
However, with var, you’re allowed to redefine the variable.

TLDR, because this is valid JS:

var a = 5;
var a = 10; // OK: a is now 10

but this is not:

let a = 5;
let a = 10; // ERROR:  a has already been defined
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