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const app = document.getElementById('app'); app.innerHTML = ` <h1>JavaScript DOM</h1> <div class="item"></div> `; const item = document.querySelector( 阅读全文
posted @ 2020-03-30 02:06
Zhentiw
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Understanding the order in which React hooks are called can be really helpful in using React hooks effectively. This chart can be really helpful in un 阅读全文
posted @ 2020-03-29 22:18
Zhentiw
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React is really good at creating and updating DOM elements, but sometimes you need to work with them yourself. A common use case for this is when you’ 阅读全文
posted @ 2020-03-29 21:57
Zhentiw
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Before: <body> <div id="root"></div> <script src="https://unpkg.com/react@16.12.0/umd/react.development.js"></script> <script src="https://unpkg.com/r 阅读全文
posted @ 2020-03-29 21:46
Zhentiw
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In angular.json 阅读全文
posted @ 2020-03-29 00:19
Zhentiw
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"Legacy" image formats like jpg and png are often 2-3x larger than "next-gen" image formats like webp. In this video, we'll see how to convert our ima 阅读全文
posted @ 2020-03-26 19:17
Zhentiw
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Sometimes you'd like to measure how two implementations compare in regards to run time. In this lesson you will learn how to quickly do this using Con 阅读全文
posted @ 2020-03-26 18:36
Zhentiw
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In this lesson we will see how to measure the used JS heap size in chrome. This can be used for various needs from performance debugging to production 阅读全文
posted @ 2020-03-26 18:33
Zhentiw
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In this lesson we will learn about how to define real private properties in javascript classes. Before: class Pasta { constructor(name) { this._name = 阅读全文
posted @ 2020-03-26 18:29
Zhentiw
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You can open files into Vim directly from the terminal. This works for both single files and multiple files. In addition to reading these files into b 阅读全文
posted @ 2020-03-26 18:22
Zhentiw
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