Mozilla MDN OpenWebDocs CSS cssCopy to Clipboardplay a[href^="https://"]::after { content: " (URL: " attr(href) ")"; color: darkgreen; } Result play The generated content is the value of the href attribute, prepended by "URL: ", with a space, all in parentheses. Adding ...
Web/CSS/Privacy_and_the_:visited_selector 曾经,CSS选择器 :visited 被网站用来查看用户的浏览记录。通过使用 getComputedStyle() 或其他方法扫描用户的浏览记录来获取用户访问了哪些网站。这很容易实现,不仅能够 ... Web/CSS/Reference 本页面展示了CSS规则的基本语法;按字母顺序列 出了所有标准的 CSS 属性、 ...
此页面由社区从英文翻译而来。了解更多并加入 MDN Web Docs 社区。 闭包 闭包是由捆绑起来(封闭的)的函数和函数周围状态(词法环境)的引用组合而成。换言之,闭包让函数能访问它的外部作用域。在 JavaScript 中,闭包会随着函数的创建而同时创建。 词法作用域 注意下面的示例代码: jsCopy to Clipboard function init...
了解更多并加入 MDN Web Docs 社区。 函数 上一页 下一页 函数是 JavaScript 中的基本组件之一。JavaScript 中的函数类似于过程——一组执行任务或计算值的语句。但要成为函数,这个过程应该接受输入并返回与输入存在某些明显关系的输出。要使用一个函数,你必须将其定义在你希望调用它的作用域内。 参见JavaScript ...
How to write an API reference This guide takes you through all you need to know to write an API reference on MDN. How to write and reference an entry in the glossary This article explains how to add and link to entries in theMDN Web Docs glossary. It also provide guidelines about gloss...
Welcome to MDN Web Docs MDN Web Docs is an open-source, collaborative project that documents web technologies including CSS, HTML, JavaScript, and Web APIs. Alongside detailed reference documentation, we provide extensive learning resources for students and beginners getting started with web development...
MDN URL https://developer.mozilla.org/en-US/docs/MDN/Writing_guidelines/Page_structures/Syntax_sections What specific section or headline is this issue about? CSS reference syntax What information was incorrect, unhelpful, or incomplete? In the Formal syntax subsection, it says that the CSS formal...
/zh-CN/docs Adding_Extensions_using_the_Windows_RegistryThis document explains how to "install" Firefox and Thunderbird extensions using the Windows ... Adding_search_engines_from_web_pages Aggregating_the_In-Memory_DatasourceYou can use XPCOM aggregation 1 with the in-memory datasource. Why wou...
English▼CatalàDeutschEspañolFrançais日本語한국어Português (doBrasil)РусскийУкраїнська中文 (简体)id="translations-add">Add a translation Inheritance If an element has nolangattribute, it will inherit thelangvalue set on itsparent node, which in turn may inherit it...
问如何阅读MDN上的CSS语法EN在面对碰撞检测后还有后续动作的情况，必须考虑一下相互纠缠的问题： 如果两...