用硒python模拟onclick [英] simulate a onclick with selenium python

问题描述

我对硒还很陌生，我正在尝试弄清楚如何模拟onclick

I am pretty new to selenium and I am trying to figure out how to simulate a onclick

这是我在检查html源代码时在源代码中看到的内容

this is what I see in the source code when I inspect the html source

<a href="#" onclick="document.getElementById('pN').selectedIndex = 0;document.getElementById('optionList').submit();return false"> <img src="images/ListingOptionSearch.jpg" onmouseover="this.src='images/ListingOptionSearchHover.jpg'" onmouseout="this.src='images/ListingOptionSearch.jpg'"> </a>

我尝试过:

driver.find_element_by_css_selector("a[onlick*=document.getElementById('pN')
.selectedIndex]").click()

但是我得到一个InvalidSelectorException

有什么主意吗?

谢谢！

推荐答案

您可以使用

from selenium import webdriver
browser = webdriver.Chrome(somepath) # You should know what this does.
browser.execute_script("document.getElementById('pN').selectedIndex = 0;document.getElementById('optionList').submit();return false")

这意味着您只需使用.execute_script就可以执行Javascript代码，对吧?

Meaning you can execute Javascript code just by using .execute_script , Awesome, right?

无效的InvalidSelectorException是在没有任何元素或没有经验的情况下提出的，可能会有一个iframe，并且您必须使用.switch_to.frame才能与之交互. 另外，我喜欢使用XPath(始终最可靠)，习惯它需要一点时间，但是经过一两个小时的练习就可以掌握它.

An invalid InvalidSelectorException is an expecting raised when there's no element or from experience, there could be an iframe and you'll have to use .switch_to.frame to be able to interact with it. Also, I like using XPath (most reliable always), it takes a little bit time getting used to, but with an hour or two of practising you can get it.

JeffC有一个优点，HTML，JS的结构可以随时更改. 您可以使用find_element_by_xpath(xpath).click()，但还有其他更动态的方法来预测结构是否会发生变化，例如使用find_element_by_name或其他可用的

JeffC has a good point, the structure of the HTML, JS can always change. You can use the find_element_by_xpath(xpath).click() but there are also more dynamic ways to predict wether the structure is going to change, using something like find_element_by_nameor other that are available:

find_element_by_id
find_element_by_name
find_element_by_xpath
find_element_by_link_text
find_element_by_partial_link_text
find_element_by_tag_name
find_element_by_class_name
find_element_by_css_selector

这篇关于用硒python模拟onclick的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！