JavaScript Brain Teasers: Exercise Your Mind/

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Discussion: The Grocery List

Discussion: The Grocery List

Execute the code to understand the output and gain insights into how JavaScript arrays handle elements vs. properties.

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Verifying the output

Now, it’s time to execute the code and observe the output.

Javascript (babel-node-es2024)
const groceryList = [];
groceryList[0] = "Bread";
groceryList[1] = "Milk";
groceryList.user = "John";
console.log(groceryList.length);

Understanding the output

In this puzzle, the array initially starts as an empty array, like an empty bucket. Then, we start filling up the array. We put the string Bread in the first position of ...