Zhentiw - 博客园

2020年3月22日

[Javascript] Use an Array of Promises with a For Await Of Loop

摘要： The "for await of" loop syntax enables you to loop through an Array of Promises and await each of the responses asynchronously. This lesson walks you 阅读全文

posted @ 2020-03-22 02:55 Zhentiw 阅读(120) 评论(0) 推荐(0)

[macOS] macOS Catalina 10.15: Setting up a Brand New Mac for Development

摘要： Read from blog 阅读全文

posted @ 2020-03-22 02:47 Zhentiw 阅读(178) 评论(0) 推荐(0)

[Javascript] NaN is number type and NaN === NaN is false

摘要： NaN == NaN // false NaN NaN // false Object.is(NaN, NaN) // true Number.isNaN(NaN) // true typeof NaN // number Because NaN is number type, so there i 阅读全文

posted @ 2020-03-22 02:24 Zhentiw 阅读(165) 评论(0) 推荐(0)

[Javascript] -0 & 0

摘要： -0 0 // true 阅读全文

posted @ 2020-03-22 02:19 Zhentiw 阅读(245) 评论(0) 推荐(0)

[Javascript] Object mental model

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posted @ 2020-03-22 02:16 Zhentiw 阅读(149) 评论(0) 推荐(0)

2020年3月21日

[HTML 5] Inserting DOM as String template insertAdjacentHTML

摘要： const app = document.getElementById('app'); app.innerHTML = ` <h1>JavaScript DOM</h1> <ul> <li>1</li> </ul> `; const ul = app.querySelector('ul'); ul. 阅读全文

posted @ 2020-03-21 20:43 Zhentiw 阅读(166) 评论(0) 推荐(0)

[HTML 5] Inserting DOM element

摘要： 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 阅读(177) 评论(0) 推荐(0)

2020年3月20日

[HTML 5] Using DocumentFragments

摘要： 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 阅读(110) 评论(0) 推荐(0)

2020年3月17日

[React + CSS3] Create an Animate Content Placeholder for Loading State in React

摘要： 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 阅读(159) 评论(0) 推荐(0)

[HTML5] DOM Nodes Explained

摘要： 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 阅读(131) 评论(0) 推荐(0)

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