Don't write a function that runs in O(n2) if it can pretty easily have an O(n) runtime with the use of hash maps.Candidates are expected to take just around 10-15 minutes for a basic question. If you can tell that you received a basic question, try to finish within the suggested...
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...
把css放到代码页上端 从页面中剥离javascript与css 精简javascript与css 避免css表达式 针对javascript: 脚本放到HTML代码页底部 从页面中剥离javascript 精简javascript与css 移除重复脚本 面向图片: 优化图片 不要在HTML中使用缩放图片 使用恰当的图片格式 使用Css Sprites技巧对图片优化 4、如何优化图像?图像格式区别? 优...
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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 ...
It’s a great design question and asked a lot in java interviews. This post provides all the differences between abstract class and interface. When should we use interface over the abstract class and vice versa? The post also explains how to use abstract class and interface to create a flexi...
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...
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Most common Tricky Javascript Interview Topics & Questions(Below Links are all within this Repository)Collection-of-Tricky-JS-Questlions closure-tricky and great Example logical-and-operator-Tricky Question Value of Null pitfall-of-using-typeof What-is-the-value-of-Math.max([2,3,4,5]) not-...
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