Zhentiw - 博客园

2018年5月24日

[Cypress] Test React’s Controlled Input with Cypress Selector Playground

摘要： React based applications often use controlled inputs, meaning the input event leads to the application code setting the value of the very input we’re 阅读全文

posted @ 2018-05-24 21:23 Zhentiw 阅读(270) 评论(0) 推荐(0)

[Cypress] Find and Test Focused Input with Chrome’s DevTools in Cypress

摘要： In this lesson, we’ll add tests that finds a focused input. We’ll use Chrome’s dev tools from inside the Cypress runner to inspect the element and upd 阅读全文

posted @ 2018-05-24 21:10 Zhentiw 阅读(289) 评论(0) 推荐(0)

[Cypress] Get started with Cypress

摘要： Adding Cypress to a project is a simple npm install away. We won’t need any global dependencies beyond node and npm to get started with Cypress. In th 阅读全文

posted @ 2018-05-24 20:51 Zhentiw 阅读(248) 评论(0) 推荐(0)

2018年5月21日

[Javascript] Highlights from IO18 Javascript new features

摘要： Latest Javascript features, not supported by all broswers, but can use with babel. # try-catch-finally, Promise finally: # Regex: 1. Lookbehind: 2. Lo 阅读全文

posted @ 2018-05-21 20:44 Zhentiw 阅读(244) 评论(0) 推荐(0)

[CSS3] :empty Selector

摘要： When the element has empty content, you might want to display some text to idicate the compoent is loading... 阅读全文

posted @ 2018-05-21 16:15 Zhentiw 阅读(151) 评论(0) 推荐(0)

[Python] Use Static Typing in Python 3.6

摘要： In this lesson, you will learn how to statically type variables in Python 3.6 Static typing can help you avoid errors when consumers of your variables 阅读全文

posted @ 2018-05-21 02:15 Zhentiw 阅读(256) 评论(0) 推荐(0)

[Javascript] Understand common misconceptions about ES6's const keyword

摘要： Values assigned with let and const are seen everywhere in JavaScript. It's become common to hear them explained like so: "const creates an constant (i 阅读全文

posted @ 2018-05-21 02:11 Zhentiw 阅读(136) 评论(0) 推荐(0)

2018年5月17日

[Javascript] Deep Search nested tag element in DOM tree

摘要： function solution( tags = ['ul', 'ol']) { const [uls, ols] = tags.map(tag => Array.from($(`${tag}`))); const [logUl, logOl] = tags.map(tag => new Logg 阅读全文

posted @ 2018-05-17 05:02 Zhentiw 阅读(268) 评论(0) 推荐(0)

2018年5月15日

[Javascript] Getter and Setter Abstractions

摘要： JavaScript provides primitive types and means of processing those. However, those are not enough. Real data must somehow come into the program and dat 阅读全文

posted @ 2018-05-15 21:59 Zhentiw 阅读(281) 评论(0) 推荐(0)

2018年5月14日

[Javascript Crocks] Apply a function in a Maybe context to Maybe inputs (curry & ap & liftA2)

摘要： Functions are first class in JavaScript. This means we can treat a function like any other data. This also means we can end up with a function as the 阅读全文

posted @ 2018-05-14 21:02 Zhentiw 阅读(245) 评论(0) 推荐(0)

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