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所在平台: Udemy |
课程主页: https://www.udemy.com/course/javascript-and-jquery-basics-for-beginners/
课程评论:没有评论
课程名称:初学者的JavaScript与jQuery基础 课程简介: JavaScript是一种可在所有现代网页浏览器中运行的编程语言,与网页的HTML代码一同下载。与只能用于显示内容的HTML不同,JavaScript允许网页设计师为他们的网站添加功能性及交互性。jQuery是个广泛使用的JavaScript库,简化了常见的JavaScript任务(如动画、事件处理、HTML内容的操作及与外部服务器的通信),并自动处理许多跨浏览器的兼容性问题。 学习内容: 1. **JavaScript模块**: - 学习在HTML中撰写JavaScript的位置,包括直接在HTML标签中、在
标签中以及在单独的文件中,讨论每种方法的优缺点。 - 掌握基础数据类型的操控,包括简单的算术运算、字符串及布尔类型。 - 学习复杂数据类型,如数组的创建、访问及修改,了解函数的定义和对象的使用。 - 探索控制流,包括“if”语句及循环,理解错误处理的重要性。 - 了解文档对象模型(DOM),学习如何与网页的HTML代码进行交互。 - 理解事件处理,学习如何响应鼠标点击、移动等,并通过实践构建一个简单的JavaScript网页,验证用户输入,显示结果和错误信息。 2. **jQuery模块**: - 从选择器学起,理解如何用选择器字符串定位特定HTML元素。 - 学习事件处理,编写响应于用户交互的代码,创建互动界面。 - 探索效果和动画,学习如何使用内置特效隐藏和显示元素,及自定义动画。 - 学习如何通过程序化方式添加、删除和修改网页的HTML内容,了解HTML文档的树状结构。 - 最后,学习AJAX(异步JavaScript与XML),与外部服务器交互并请求数据,处理响应及错误。 先决条件: - 基本的HTML知识,了解HTML标签及属性。 - 推荐使用Google Chrome浏览器执行示例,因其开发者工具全面。 - 推荐使用Notepad++文本编辑器,因其支持语法高亮及自动完成功能。 通过本课程,学生将掌握JavaScript和jQuery的基础,能够在网页中增加互动性和功能性,提高用户体验。OverviewJavaScript is a programming language that can be run by all modern web browsers. It is downloaded alongside the HTML code of a webpage. Unlike HTML, which can only be used to display content, JavaScript allows web designers to add functionality and interactivity to their websites.JQuery is a popular JavaScript library that is used extensively in modern websites. This library facilitates common JavaScript tasks such as animations, event handling, manipulating HTML content, and communication with external servers. In addition to its easy-to-use features, JQuery also takes care of many cross-browser compatibility issues automatically. What you will learnJavascrtipt Modules...We will begin the course by learning where to write JavaScript. We will look at writing JavaScript directly inside an HTML tag, then inside of a tag, and then finally in a file separate from the HTML document. We will discuss some of the reasons for using each method.After that, we will learn about how to manipulate some basic data types. We will learn about how to do simple arithmetic, and also look at some of JavaScript's built-in mathematical capabilities. Then, we will learn about working with words and characters, using a data type known as the "string". We will also cover the Boolean type, which is a representation of True and False inside of a programming language.Then we will move on to more complex types. We will learn about the array, which is essentially a list. We will look at how to create arrays, how to access elements inside them, and how to modify the contents of an array. Functions will also be covered, which will allow us to organize code into simple, reusable pieces. We will also learn about objects, which are a way of grouping together data and behaviors.We will then move on to control flow. We will look at the "if" statement, which allows the script to decide whether or not to execute a block of code based on some condition. We will also look at looping. Looping refers to repeatedly executing a block of code until some condition is met. Then, we will learn about errors, and how to handle them properly so that they do not halt execution of the script.Next, we will look at the Document Object Model ( DOM ). This is what allows JavaScript to interact with the HTML code of a webpage. We will look at several ways of finding any particular HTML element on the page. Then we will see what information we can extract from that element (tag name, attributes,etc.). We will learn about adding and removing elements from a page. Finally, we will learn about events, which allows JavaScript to react to things like mouse clicks, mouse movement, key presses, and many others.We will end the course with a practical exercise, in which we will build a simple JavaScript-based webpage. We will put to use most of the concepts covered in the course. We will look at how to validate user input, how to display results, and how to display meaningful error message to the user.jQuery Modules...We will begin the course by learning about selectors. Selectors are strings that are used to target specific HTML elements on the page. The selector syntax is highly intuitive and easy to read and understand.We will then move on to events. The student will learn how to write code that reacts to things like mouse clicks, key presses, when the page is done loading, and a few others. These events allow programmers to create interactive user interfaces.After that, we will move on to effects and animations. Effects are used to hide and show elements. An example would be a menu that slides open when the mouse hovers over it. JQuery has a few built-in effects that can be implemented with minimal coding. For further customization, we will look at animations, which allow programmers to animate most of the visual properties of HTML elements.Then we will learn about changing the HTML content of a webpage. This includes adding and removing entire HTML elements, as well as modifying text and other HTML attributes programmatically. We will also learn about how to navigate the tree-like structure of an HTML document using the concept of parent-, sibling-, and child-elements.Finally, we will end the course by looking at AJAX, which stands for Asynchronous JavaScript and XML. AJAX allows programmers to interact with external servers. To serve as our example, we will read airport data from a public web service. We will learn how to request data, how to handle the response, and how to handle errors.PrerequisitesHTML: The student must know how to use HTML tags and attributes. Only a very basic understanding of HTML is assumed.Google Chrome (Recommended): Google Chrome is a free web browser and it will beused to execute all the examples in this course. Although all browsers can run JavaScript, Chrome has extensive built-in developer tools. In the course, we will be using Chrome's JavaScript console, which will allow us to run quick little examples without the need to create and edit files.Notepad++ (Recommended): Notepad++ is a free, open-source text editor. Although JavaScript and HTML can be written using any text editor, Notepad++ is highly recommended because of features such as syntax highlighting and auto-complete.