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This interview question is taken from The Madness of King JavaScript.step 1: find the problem with this codeThe question is pretty simple: why do we get different results when calling parseFloat vs parseInt?['1', '2', '3'].map(parseFloat); //=> [1, 2, 3] ['1', '2...
These questions are often either (1) high-level system design ("How would you build a Twitter clone?") or (2) trivia ("What is hoisting in Javascript?"). Sometimes the trivia is a lead-in for a "real" question e.g., "How quickly can we sort a list of integers? Good, now ...
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This is an extremely common JavaScript interview question. All JavaScript objects have a prototype property, that is a reference to another object. When a property is accessed on an object and if the property is not found on that object, the JavaScript engine looks at the object's prototype,...
It's simple—you click on one of three boxes to see what nice thing you've won. You always win something nice. Because we love you. Here's what we have so far. Something's going wrong though. Can you tell what it is? Button 1 Button 2 Button 3 const prizes = ['A Unicorn...
However, this still is an example of a typical behavioral question that relies on sharing a past work experience. The most effective way to answer these questions is with the STAR method (situation, task, action, result). Since Meta stated values include being direct, showing respect to collea...