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React App – My alert window is showing up twice

I don’t understand why this is happening – I have an app that increments and decrements a counter when the buttons are pressed to display an increasing list of easter egg brands from a collection. When the counter reaches the max number of eggs in the collection I want a popup to appear saying &#8…

How to call the function from htmlcode

I have JS code, that works as it supposed to. But insetad of calling “islandA.onclick” from the function, I need to call it from the outside – from HTML code. (there are more islands 🙂 $…

The negation operator in JS

Why in this case gets false since the negation operator is used. Without the negation operator it also gets false because the operator ===checks if it compares the same values with the same data type. Why, then, after putting the exclamation point directly after x, does he still get false, since it contradict…