frontend-development-2:前端开发2,SS 2018的作业
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在前端开发领域,HTML(HyperText Markup Language)是构建网页内容的基础语言,它定义了网页的结构和元素。本课程“前端开发2”,由讲师Hannes Moser在2018年春季学期(SS 2018)指导,旨在深入讲解HTML5的相关知识和实践技巧,帮助学生掌握构建现代网页的必备技能。 HTML5是HTML的最新版本,引入了许多新特性,提高了网页的互动性和可访问性。以下是一些关键知识点: 1. **语义化标签**:HTML5引入了诸如<header>, <nav>, <section>, <article>, <aside> 和 <footer>等语义化标签,使得网页结构更清晰,有助于搜索引擎优化(SEO)和无障碍访问。 2. **多媒体支持**:HTML5通过<video>和<audio>标签原生支持视频和音频播放,无需依赖Flash等第三方插件。同时,还提供了controls属性来控制媒体播放。 3. **离线存储与本地存储**:通过AppCache和Web Storage(包括localStorage和sessionStorage),HTML5允许应用程序在用户离线时也能访问部分数据,提升了用户体验。 4. **Canvas和SVG**:Canvas是用于绘制2D图形的API,可以动态创建图像、图表等。SVG(Scalable Vector Graphics)则用于创建可缩放的矢量图形,适合制作图标、流程图等。 5. **拖放功能**:HTML5的drag and drop API使得用户可以轻松地在网页上拖放元素,增强了交互性。 6. **表单控件增强**:新的表单元素如<input type="date">、<input type="range">和<form validation>提供更好的用户输入验证,提高了表单数据的准确性和安全性。 7. **Geolocation API**:允许网页获取用户的地理位置信息,为开发地理位置相关的应用提供了可能。 8. **Web Workers和Web Sockets**:Web Workers允许在后台执行复杂的计算任务,不阻塞主线程,提高页面性能;Web Sockets则实现了双向实时通信,适合构建实时聊天、游戏等应用。 在"frontend-development-2-master"这个压缩包中,很可能包含了关于这些HTML5特性的示例代码、练习项目和教学资源。学习者可以通过分析和实践这些项目,深化对HTML5的理解,提升前端开发能力。此外,前端开发还包括CSS(层叠样式表)和JavaScript的学习,它们与HTML一起构成网页的三剑客,共同实现网页的布局、样式和交互。在实际的前端项目中,还需要了解如何使用框架(如React、Vue或Angular)和库(如jQuery)来提高开发效率和代码质量。
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