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Vacation of Gusabary 🏝
JavaScript 的逻辑与 &&,它可以方便地条件渲染一个元素:
return ( <div> <h1>Hello!</h1> {unreadMessages.length > 0 && <h2> You have {unreadMessages.length} unread messages. </h2> } </div> );
解释一下这种逻辑与操作能work背后的逻辑。
在你的learning notes 1.16_HTML,你在记录表单相关知识的时候写到:
method 属性定义了发送数据的HTTP方法(它可以是“get”或“post”).
那么,什么是HTTP 方法?它主要的作用是什么?它都有哪些?各自的作用是什么?
字符串与数字类型的互换
的内容,这称为强制转换,但是例子中只有显式强制转换,了解隐式强制转换s.length
是字符串的一个属性,s.toLowerCase()
是字符串的一个方法。查找相关资料试解释内建类型拥有属性和方法的原因。A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.