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const app = document.getElementById('app'); app.innerHTML = ` <h1>JavaScript DOM</h1> `; const div = document.createElement('div'); const span = docum 阅读全文
posted @ 2020-03-21 20:37
Zhentiw
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DocumentFragment can create virtual dom tree. It can helps to avoid layout reflow.. problems Code has profermance problem: const data = ['Earth', 'Fir 阅读全文
posted @ 2020-03-20 22:15
Zhentiw
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We will create animated Content Placeholder as React component just like Facebook has when you load the page. Key points: 1. For each elements on the 阅读全文
posted @ 2020-03-17 19:03
Zhentiw
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import './assets/css/style.css'; const app = document.getElementById('app'); app.innerHTML = '<h1>JavaScript DOM</h1>'; // <html> console.log(document 阅读全文
posted @ 2020-03-17 03:34
Zhentiw
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举个例子： “把这份报告复印一下”。 5W2H Who： 小张 What：复印报告 How： 用高品质复印 When：下班前 Where： 总经理办公室 How many：2份 Why：给客户做参考 整理后： “请你将这份报告复印2份，在下班前送到总经理办公室交给总经理。请留意复印的质量，总经理要带 阅读全文
posted @ 2020-03-16 03:51
Zhentiw
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// Definition const Endo = run => ({ run, concat: other => Endo(x => other.run(run(x))) }); Endo.empty = () => Endo(x => x); // Ex1: // const classToC 阅读全文
posted @ 2020-03-15 21:12
Zhentiw
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Normally when we use 'map', we do the transform base on the output. 'contramap' can do the transform base on the input, which means, before the orgina 阅读全文
posted @ 2020-03-15 21:11
Zhentiw
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Endo: It takes a type as string and output is the same type. It's concat methods works like composion. All the transform functions on the same input. 阅读全文
posted @ 2020-03-15 18:10
Zhentiw
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There are two types of Loading events: DOMContentLoaded Loaded DOMEContentLoaded: It happens after index.html has been parsed. <!DOCTYPE html> <html> 阅读全文
posted @ 2020-03-15 02:57
Zhentiw
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const Reader = run => ({ run, map: f => Reader(x => f(run(x))), chain: f => Reader(x => f(run(x)).run(x)), concat(o) { return Reader(x => run(x).conca 阅读全文
posted @ 2020-03-14 05:07
Zhentiw
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