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所在平台: Udemy |
课程主页: https://www.udemy.com/course/css-xpath-masterclass/
课程评论：没有评论
**课程名称：CSS选择器与XPath精通大师班** **课程概述：** 本课程专注于教授如何使用CSS选择器和XPath来精准、高效地选择网页元素。虽然基础选择器（如标签名、类名、ID）能够满足大部分需求，但在实际的网页开发和数据抓取项目中，往往需要更强大、更灵活的选择方法。本课程将带你深入学习你可能前所未闻的各种高级选择器，无论你是偏好CSS选择器、XPath，还是希望两者兼顾，学完本课程后，你将能够编写出准确、简洁且易于理解的选择器。 **课程将涵盖：** **CSS选择器：** * 标签/类型选择器 * 类名与ID选择器 * 属性-值选择器 * 层级选择器（父、兄弟、子元素） * startswith, endswith, contains 操作符 * not() 函数 * first-child, last-child, only-child * nth-child 或元素位置选择器 * 伪元素 * 元素状态选择器 **XPath：** * 绝对路径与相对路径 * 标签/类型选择器 * 位置或索引选择器 * 属性-值选择器 * startswith(), contains() 功能 * 数学运算符 * 条件运算符 * 轴（ancestor, parent, sibling, child, descendant） * 元素位置 * 子元素计数 * 处理器函数（如 round(), translate() 等） **课程特色：** 课程中将通过真实世界用例来展示每种选择器的全部潜力，帮助你理解它们的实际应用场景，并能根据项目需求选择最合适的选择器。 **课程目标学习者：** * 构建网页抓取器以提取网站数据的开发者 * 希望精通CSS选择器的前端开发者 * 使用网页自动化/测试框架的专业人士 * 任何需要使用CSS、XPath或两者来选择网站元素，并希望提升技能水平的学习者。 通过本课程，你将显著提升网页元素选择的能力。
This course is all about selecting web elements with CSS Selectors & XPath!When learning about the basic CSS Selectors or XPath, we know about the tag name selectors, class selectors, id selectors, and that's it. Most web elements can be selected using the selectors mentioned before, but there is always a demand for more in a real-world project. A better way to do the task, i.e. select web elements.So it's time you up your game of web element selection and learn about the cool selectors you've never heard of. Whether you want to use CSS Selectors, XPath, or both, after taking this course, you'll write selectors which are accurate, concise, and easy to understand!As I mentioned at the top, this course is all about SELECTORS! Here's an overview of what we will cover,CSS SelectorsTagname/TypeClass & IdAttribute-ValueHierarchy (Parent, Sibling & Child)starts-with Operatorends-with Operatorcontains Operatornot Functionfirst-child, last-child, or only-childnth-child or Element PositionPseudo ElementsElement StatesXPathAbsolute & Relative PathTagname/TypePosition or IndexAttribute-Valuestarts-with( ) Functioncontains( ) FunctionMathematical OperatorsConditional OperatorsAxes ( ancestor, parent, sibling, child, or descendant )Element PositionChild Element CountProcessor Function ( like round( ), translate( ), etc.)To show the full potential of each selector, it is introduced with a use case in a real-world example so that everything fits into your mind. You'll be able to decide which selector to use in your projects.Now whether you build web scrapers to scrape data from websites, are a front-end developer looking to master CSS Selectors, or use web automation/testing frameworks, if you're selecting web elements from websites either using CSS, XPath, or both - you should take this course to take your web selection to the next level!
