Question

当网页上显示按钮时，我想以编程方式单击该按钮，有办法吗？

这是按钮，没有ID，只有ID；

<div class="VotingButtons"><button class="VotingButton VotingButton--upvote btn-white" type="button">Like</button>

有关此按钮的更多信息：

<div class="VotingWrapper VotingWrapper--isBlocking"><p class="VotingWrapper__text"><strong>Do you like this image?</strong></p><div class="VotingButtons"><button class="VotingButton VotingButton--upvote btn-white" type="button">Like</button><button class="VotingButton VotingButton--downvote btn-white" type="button"><span class="VotingButton__text--hideOnMobile">Dislike</span></button></div></div>

我尝试使用此代码，但是它不起作用：

private async void Btn_GoToDirectly_Click(object sender, EventArgs e)
    {
        
        var script = @"
document.getElementsByClassName('VotingButton VotingButton--upvote btn-white')[0].click();
browser.ExecuteScriptAsync(script);
    ";
            browser.ExecuteScriptAsync("document.getElementByClassName('VotingButton VotingButton--upvote btn-white').click()");

Answer 1

变量脚本具有的字符串具有getElementsByClassName，并使用索引0处的结果（似乎正确），但是您实际运行的脚本具有getElementByClassName，单数不存在（当然也没有索引器）..您是否尝试运行脚本变量？

    string script = @"document.getElementsByClassName('VotingButton VotingButton--upvote btn-white')[0].click();"
    browser.ExecuteScriptAsync(script);

除了cefsharp代码外，此操作无所不能-但是，如果您在javascript中有类似的内容，则script中的代码应可通过cefsharp工作。

let like= function(){
    console.log("like");
};

let trigger= function(){
console.log("trigger");
document.getElementsByClassName('VotingButton VotingButton--upvote btn-white')[0].click();
};

<html>
<body>
<div class="VotingWrapper VotingWrapper--isBlocking">
<p class="VotingWrapper__text">
<strong>Do you like this image?</strong>
</p>
<div class="VotingButtons">
<button onclick="like()" class="VotingButton VotingButton--upvote btn-white" type="button">Like</button>
<button class="VotingButton VotingButton--downvote btn-white" type="button">
<span class="VotingButton__text--hideOnMobile">Dislike</span>
</button>
</div>
</div>
<button onclick="trigger()" type="button">Trigger</button>
</body>
</html>

Answer 2

您可以使用硒，

Nuget导入Selenium.RC，Selenium.Support，Selenium.WebDriver，

 using (IWebDriver driver = new OpenQA.Selenium.IE.InternetExplorerDriver())
     {
         driver.Navigate().GoToUrl("http://www.xxurl.com");  
         driver.FindElements(By.ClassName("VotingButton VotingButton--upvote btn-white")).Click();
     }

如何执行网页上的点击按钮？

2 个答案: