Zhentiw - 博客园

2020年4月2日

[ARIA] Read error message for the focused form field by using aria-describedby

摘要： Labeling inputs, elements, and widgets add context and clarity for assistive technology such as screen readers. Beyond adding accessible labels to ele 阅读全文

posted @ 2020-04-02 03:10 Zhentiw 阅读(193) 评论(0) 推荐(0)

[ARIA] Group different DOM element in screen reader by using aria-labelledby

摘要： Labeling inputs, elements, and widgets add context and clarity for assistive technology such as screen readers. When there are already one or more oth 阅读全文

posted @ 2020-04-02 03:02 Zhentiw 阅读(136) 评论(0) 推荐(0)

2020年4月1日

[React] Handle HTTP Errors with React

摘要： Unfortunately, sometimes a server request fails and we need to display a helpful error message to the user. In this lesson we’ll handle a promise reje 阅读全文

posted @ 2020-04-01 02:31 Zhentiw 阅读(208) 评论(0) 推荐(0)

2020年3月31日

[Angular] Modify :before / :after value from Javascirpt

摘要： Let's say we want to dynamiclly change some style in :before or :after element. We cannot use NgStyle, it doesn's support this use case, what we can d 阅读全文

posted @ 2020-03-31 02:30 Zhentiw 阅读(178) 评论(0) 推荐(0)

[React] Using React Error Boundaries to handle errors in React Components

摘要： No matter how hard you try, eventually your app code just isn’t going to behave the way you expect it to and you’ll need to handle those exceptions. I 阅读全文

posted @ 2020-03-31 01:45 Zhentiw 阅读(186) 评论(0) 推荐(0)

2020年3月30日

[Javascript] Finding Sibling Elements

摘要： const app = document.getElementById('app'); app.innerHTML = ` <h1>JavaScript DOM</h1> <ul id="list"> <li>1</li> <li>2</li> <li>3</li> <li>4</li> </ul> 阅读全文

posted @ 2020-03-30 02:07 Zhentiw 阅读(156) 评论(0) 推荐(0)

[Javascript] Finding Parent Elements

摘要： 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 阅读(106) 评论(0) 推荐(0)

2020年3月29日

[React] Understand the React Hook Flow

摘要： 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 阅读(291) 评论(0) 推荐(0)

[React] Manipulate the DOM with React refs

摘要： 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 阅读(125) 评论(0) 推荐(0)

[React] Use a lazy initializer with useState

摘要： 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 阅读(241) 评论(0) 推荐(0)

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