testing - 如何使用 selenium 检查 Web 表单元素是否存在

Question

我需要使用 selenium 检查当前网页中是否存在表单元素。有人知道该怎么做吗？

Answer 1

There are two ways to do this. Either use lefthandedgoat's version catching an exception, or use the FindElements method and check it's size, so something like (in C# using LINQ):

public bool IsElementPresent(By selector)
{
    return driver.FindElements(selector).Any();
}

Either option will work fine, there is not really much different. I personally use the other way, but wanted to make sure you knew there are generally two ways to do this. You didn't mention a language, so let us know if there is a specific language you are using.

It is worth noting that underneath, when you do a FindElement() in Selenium, it is performing this method.

Answer 2

在 selenium 的 C# 版本中，如果元素不存在，它将引发异常。你可以做这样的事情

public bool Exists(string cssSelector)
{
  try
  {
    browser.FindElement(By.CssSelector(cssSelector));
    return true
  }
  catch (Exception ex){}

  return false;
}


var exists = Exists("form");

我不确定 webdriver 在其他语言中的行为方式。

Answer 3

您可以使用两种方法：

input.findElements(By.xpath("//....blablalba....")).size() > 0

driver.findElement(By.xpath("//....blablalba....")).isDisplayed()