I have a bunch of elements with a class name red, but I can't seem to select the first element with the class="red" using the following CSS rule: .home .red:first-child { border: 1px solid red; } <div class="home"> <span>blah</span> <p class="red">first</p> <p class="...
element with name1 #id #firstname Selects the element with id="firstname" * * Selects all elements element p Selects all <p> elements element.class p.intro Selects all <p> elements with class="intro" element,element div, p Selects all <div> elements and all <p> elements element ...
一、三种基础选择器 1. 元素选择器（Element Selector）元素选择器是最基础也是最直接的选择器，它根据HTML元素的名称来选择元素。例如，如果你想为所有的`<p>`标签设置样式，你可以使用`p`作为选择器。css p { color: red;} 在上面的例子中，所有的`<p>`标签中的文本都将显示为红色。元素选择器是最基础的...
element = driver.find_element_by_css_selector("input[id='kw']") # 根据 属性 定位元素 # element = driver.find_element_by_css_selector("input[class='s_ipt']") # 根据 属性 定位元素 # element = driver.find_element_by_css_selector("input[name='wd']") # 根据 属性 定位元素 element...
SelectorExampleExample description .class.introSelects all elements with class="intro" .class1.class2.name1.name2Selects all elements with bothname1andname2set within its class attribute .class1 .class2.name1 .name2Selects all elements withname2that is a descendant of an element withname1 ...
driver.find_element_by_class_name(),但类名中有空格 、、、 Error message : selenium.common.exceptions.InvalidSelectorException: Message: Given css selector expressioninvalid: InvalidSelectorError: Document.querySelector: '. clickable event-link math ' is not a valid selector: ". clickable event...
.show-grid [class*="span"] It's a CSS selector that selects all elements with the class show-grid that has a child element whose class contains the name span. Share Follow edited Dec 31, 2020 at 17:43 isherwood 60.7k1616 gold badges120120 silver badges165165 bronze badges answered...
Steps to reproduce: package org.example; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; public class Main { public static void main(String[] args) { String html = "<!DOCTYPE html><html><body>\n" ...
方式一 后代或平级关系来选择元素 : 父元素: (#)表示通过 id 属性来定位元素 (.)表示通过 class 属性来定位元素 子元素(后代关系) #choose_car option 含空格的,后面的元素不必是前面元素的直接子元素,只要在父元素的里面 .s_ipt_wr span #choose_car > option 含>键的, 后面的元素必须是前面元素的直接...
find_element_by_css_selector 判断属性 css条件判断,用JavaScript在客户端检测浏览器是否支持某项功能特征,目前虽然这是最可行的方法,但不好的是,对于同一个特征的检测,我们需要反复多次用相同的函数附带各种浏览器前缀。而且因为CSS没有相应的功能,使用JavaScript会