From the course: Mastering Web Developer Interview Code
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Are you comfortable using jQuery?
From the course: Mastering Web Developer Interview Code
Are you comfortable using jQuery?
- [Instructor] jQuery is one of the most popular JavaScript libraries on the web. It was introduced in 2006, so it's more than 10 years old. And some estimates calculate that it is used in almost 80% of all websites. So if you're applying for a job, you need to know how to use it. So let's take a look at what it does and why it's so popular. So first of all, jQuery is a JavaScript library. So it's essentially a series of functions that sit on top of JavaScript. The main reason people use jQuery is because it makes JavaScript more compatible across different browsers and platforms. One of the dirty secrets of browsers is that they don't always implement JavaScript features the same way. Older browsers, for example, don't support newer features. So jQuery implements popular features and then translates them so that they work in older browsers. This saves you a lot of time because you don't have to write extra code to…
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Contents
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How do you use the data- attribute in HTML?11m 14s
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Are you comfortable using jQuery?11m 32s
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Describe when you should use the bind() method5m 21s
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Do you know how to use the conditional operator?3m 43s
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Have you used Ajax to load an external file?8m 25s
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Have you used JavaScript templates?7m 3s
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How do you manipulate the DOM?11m 7s
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How do you search using functional programming?6m 27s
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How do you use a constructor to create instances?10m 33s
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How do you use arrow functions in ES6?6m 30s
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How do you use the Fetch API?7m 22s
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How do you render JSON to a DOM element?9m 36s
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How does an IIFE work?7m 12s
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How does immutability work in JavaScript?4m 12s
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How would you use JavaScript reduce()?3m 54s
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Quick concepts: Do you have experience linting your code?2m 31s
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What are event bubbling and propagation about?11m 42s
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What does "use strict" do?3m 28s
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What is a callback and how do you use it?8m 51s
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What is the relationship between promises and callbacks?9m 57s
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What is the virtual DOM?7m 7s
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What is variable hoisting and how do you guard against it?8m 43s
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What tooling options have you used in the past?7m 11s
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When would you use recursion?6m 25s
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Can you build a Sass mixin?7m 57s
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Do you know how to use CSS variables?10m 38s
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Animate an underline on hover in CSS9m 48s
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Explain the difference between absolute and relative positioning7m 55s
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How comfortable are you with Sass?12m 10s
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How do you animate CSS?9m 41s
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How do you debug CSS using your browser?10m 47s
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How do you use calc() in CSS?9m 56s
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How would you use flexbox to control horizontal alignment?7m 21s
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In CSS, what's the difference between ems and rems?9m 58s
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What's the difference between a pseudo-class and a pseudo-element?6m 16s
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Do you know how to use npm?8m 40s
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Do you have experience using version control?16m 37s
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How does routing work in a modern web application?9m 30s
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