Selenium，你如何检查滚动位置 [英] Selenium, how do you check scroll position

问题描述

在java中使用selenium，我需要测试一个返回顶部按钮，所以我做的是向下滚动页面，直到显示返回顶部按钮（当滚动页面的25％时显示） ）并单击它，此按钮将用户带到页面顶部，现在我需要检查它是否有效，可见部分是页面的顶部。我怎么能用java做这个？

Using selenium with java, I need to test a "Back to top" button, so what I did is to scroll page down until "Back to top" button is shown (as it is shown when scrolled 25% of the page) and click it, this button takes user to the top of the page, now I need to check that it worked and the visible part is the top of the page. How can I do this using java?

推荐答案

一般原则是检查窗口的值。浏览器中的pageYOffset 。如果您的按钮完全回滚到顶部，则 window.pageYOffset 的值应为0.假设驱动程序变量保存您的 WebDriver 实例：

The general principle is to check the value of window.pageYOffset in the browser. If your button scrolls completely back to the top then window.pageYOffset should have a value of 0. Assuming the driver variable holds your WebDriver instance:

JavascriptExecutor executor = (JavascriptExecutor) driver;
Long value = (Long) executor.executeScript("return window.pageYOffset;");

然后您可以检查值是否为0 。 executeScript 用于在浏览器中运行JavaScript代码。

You can then check that value is 0. executeScript is used to run JavaScript code in the browser.

这个答案最初提到 scrollY 但IE上没有支持它。 上面的MDN页面说：

This answer initially mentioned scrollY but there's no support for it on IE. The MDN page on it, says:

对于跨浏览器兼容性，请使用 window.pageYOffset 而不是 window.scrollY 。此外，旧版本的Internet Explorer（< 9）不支持任何属性，必须通过检查其他非标准属性来解决。完全兼容的示例：

For cross-browser compatibility, use window.pageYOffset instead of window.scrollY. Additionally, older versions of Internet Explorer (< 9) do not support either property and must be worked around by checking other non-standard properties. A fully compatible example:

var supportPageOffset = window.pageXOffset !== undefined;
var isCSS1Compat = ((document.compatMode || "") === "CSS1Compat");

var x = supportPageOffset ? window.pageXOffset : isCSS1Compat ? document.documentElement.scrollLeft : document.body.scrollLeft;
var y = supportPageOffset ? window.pageYOffset : isCSS1Compat ? document.documentElement.scrollTop : document.body.scrollTop;

感谢 R上。 Oosterholt 为抬头。

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