XPath is a powerful language for selecting nodes in an XML or HTML document. JavaScript provides built-in support for XPath through the document.evaluate() method, which can be used to evaluate an XPath expression and return the matching nodes in the document

在蘑菇街Weshop部门实习期间的爬虫代码。基于 Scrapy 爬虫框架，对静态或动态页面分别通过 XPath 定位的规则或抓取请求并模拟的方式爬取国外电商平台中商品的 Sku 数据，例如衣服的尺寸、颜色、型号等。

Add new page styling rules. Use selectors by: type, id, class and attr. Use combinators and pseudo-classes. Add the xpath.txt file. Write down the XPath equivalents of the CSS selectors you added. Add a selector by text. Add a large block of text. Add a button "to the beginning". After clicking on the button, scroll to the beginning of the page.

A simple example to parse page source of a url in android using x-path