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A comment on Using const/let instead of var can make JavaScript code run 10× slower in Webkit. Parent comment

Re:Using const/let instead of var can make JavaScript code r... by jansan on Wednesday October 21, 2020 @06:16AM (#24846347)
It's the same in Java and never caused any problems. You just have to understand what const does. What the OP is looking for is Object.seal() and Object.freeze().

This is a pointless discussion.

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