css-selectors

问题 Given the following HTML markup, I want to apply (S)CSS only when 2 of the same elements exist (not when 1 exists). I don't want to use JavaScript to count the number of elements and apply another class, however, I feel this is the only approach. div { a + a { // I want to apply styles to both a tags, not just the second one // WHEN 2 a tags exists } } <div> <a href="/">Home</a> <a href="/about">About</a> </a> 回答1: You can use "quantity queries". For exactly TWO... a:nth-last-child(n+2):nth

问题 Trying to automate the process by avoiding clicking on the already requested or followed users. Instagram allows following of max. 7500 user a day. I would like to limit it to that number as well as avoid what I described in the first sentence. My code: List<WebElement> clickOnFollowButton = driver.findElements(By.xpath("//button[contains(text(),'Follow')]")); for (int i = 0; i < clickOnFollowButton.size() ; i++) { WebElement element = driver.findElements(By.xpath("//button[contains(text(),

问题 I am trying to scrape rating off of trustpilot.com. Is it possible to extract a class name using scrapy? I am trying to scrape a rating which is made up of five individual images but the images are in a class with the name of the rating for example if the rating is 2 starts then: <div class="star-rating count-2 size-medium clearfix">... if it is 3 stars then: <div class="star-rating count-3 size-medium clearfix">... So is there a way I can scrape the class count-2 or count-3 assuming a

问题 I am trying to pass arguments to a search text in a HTML code using Selenium in Python: I am working on the following HTML code: </form><form class="search-box-inner"> <div class="input-container"> <input type="text" class="typeahead search-box-input left" autocomplete="off" placeholder="Search ratings, research, analysts, and more..." maxlength="900"></div> </form> The code does not have id or name. It has elements by class only. I tried the following self.driver.find_elements_by_class_name(

问题 I am trying to pass arguments to a search text in a HTML code using Selenium in Python: I am working on the following HTML code: </form><form class="search-box-inner"> <div class="input-container"> <input type="text" class="typeahead search-box-input left" autocomplete="off" placeholder="Search ratings, research, analysts, and more..." maxlength="900"></div> </form> The code does not have id or name. It has elements by class only. I tried the following self.driver.find_elements_by_class_name(

问题 This is a bit of a pedantic question, but perhaps worth asking. Is there, mechanically, a difference between a pseudo-class and a pseudo-selector in CSS? We use the term interchangeably around here, but it seems that there's a reason for the two terms. Is there any use to differentiating the two? 回答1: A pseudo-class is a specified thing, while pseudo-selector is a made up word. (Meanwhile, a pseudo-class matches an element when certain conditions are met (e.g. the mouse is pointing at it, or

问题 The following is the HTML structure: <div class='list'> <div> <p class='code'>12345</p> <p class='name'>abc</p> </div> <div> <p class='code'>23456</p> <p class='name'>bcd</p> </div> </div> And there is a config.py for user input. If the user input 23456 to config.code, how can the selenium python select the second object? I am using find_by_css_selector() to locate and select the object, but it can only select the first object, which is Code='12345' . I tried to use find_by_link_text() , but

问题 The following is the HTML structure: <div class='list'> <div> <p class='code'>12345</p> <p class='name'>abc</p> </div> <div> <p class='code'>23456</p> <p class='name'>bcd</p> </div> </div> And there is a config.py for user input. If the user input 23456 to config.code, how can the selenium python select the second object? I am using find_by_css_selector() to locate and select the object, but it can only select the first object, which is Code='12345' . I tried to use find_by_link_text() , but

问题 I want to get only " text ... " not using .split() or index slicing HTML: <a class="call_recipe" href="/recipes/2913"> " text ... " <strong> something~ </strong> </a> HTML Snapshot: 回答1: To print text ... you have to induce WebDriverWait for the visibility_of_element_located() and you can use either of the following Locator Strategies: Using CSS_SELECTOR and childNodes : print(driver.execute_script('return arguments[0].firstChild.textContent;', WebDriverWait(driver, 20).until(EC.visibility_of

问题 I want to get only " text ... " not using .split() or index slicing HTML: <a class="call_recipe" href="/recipes/2913"> " text ... " <strong> something~ </strong> </a> HTML Snapshot: 回答1: To print text ... you have to induce WebDriverWait for the visibility_of_element_located() and you can use either of the following Locator Strategies: Using CSS_SELECTOR and childNodes : print(driver.execute_script('return arguments[0].firstChild.textContent;', WebDriverWait(driver, 20).until(EC.visibility_of