课程: Mastering Web Developer Interview Code
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What is the virtual DOM?
- [Instructor] One of the most significant developments in recent history has been the rise of the virtual DOM as the technology that can help speed up development. So let's take a look at what the virtual DOM is and how it can help you develop projects faster. Now, before I get to talk about the virtual DOM it's probably a good idea to talk about how the regular DOM works. The DOM is of course the document object model the conceptual structure that is generated when you create a website, you can preview that structure on any website by using a tool like Google Chrome and looking at the inspect option. So let's go to this page right here and I'm going to right click anywhere on this page and select inspect document that you can see the DOM is represented here by this hierarchical tree. And I can open up the different parts of the DOM by clicking on these left arrows and Google Chrome I can also navigate the DOM down here. So…
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内容
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How do you use the data- attribute in HTML?11 分钟 14 秒
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Are you comfortable using jQuery?11 分钟 32 秒
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Describe when you should use the bind() method5 分钟 21 秒
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Do you know how to use the conditional operator?3 分钟 43 秒
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Have you used Ajax to load an external file?8 分钟 25 秒
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Have you used JavaScript templates?7 分钟 3 秒
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How do you manipulate the DOM?11 分钟 7 秒
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How do you search using functional programming?6 分钟 27 秒
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How do you use a constructor to create instances?10 分钟 33 秒
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How do you use arrow functions in ES6?6 分钟 30 秒
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How do you use the Fetch API?7 分钟 22 秒
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How do you render JSON to a DOM element?9 分钟 36 秒
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How does an IIFE work?7 分钟 12 秒
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How does immutability work in JavaScript?4 分钟 12 秒
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How would you use JavaScript reduce()?3 分钟 54 秒
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Quick concepts: Do you have experience linting your code?2 分钟 31 秒
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What are event bubbling and propagation about?11 分钟 42 秒
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What does "use strict" do?3 分钟 28 秒
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What is a callback and how do you use it?8 分钟 51 秒
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What is the relationship between promises and callbacks?9 分钟 57 秒
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What is the virtual DOM?7 分钟 7 秒
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What is variable hoisting and how do you guard against it?8 分钟 43 秒
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What tooling options have you used in the past?7 分钟 11 秒
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When would you use recursion?6 分钟 25 秒
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Can you build a Sass mixin?7 分钟 57 秒
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Do you know how to use CSS variables?10 分钟 38 秒
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Animate an underline on hover in CSS9 分钟 48 秒
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Explain the difference between absolute and relative positioning7 分钟 55 秒
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How comfortable are you with Sass?12 分钟 10 秒
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How do you animate CSS?9 分钟 41 秒
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How do you debug CSS using your browser?10 分钟 47 秒
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How do you use calc() in CSS?9 分钟 56 秒
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How would you use flexbox to control horizontal alignment?7 分钟 21 秒
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In CSS, what's the difference between ems and rems?9 分钟 58 秒
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What's the difference between a pseudo-class and a pseudo-element?6 分钟 16 秒
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Do you know how to use npm?8 分钟 40 秒
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Do you have experience using version control?16 分钟 37 秒
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How does routing work in a modern web application?9 分钟 30 秒
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