JavaScript 警告框,提示框和确认框

WebDriver提供了一个API, 用于处理JavaScript提供的三种类型的原生弹窗消息. 这些弹窗由浏览器提供限定的样式.

Alerts 警告框

其中最基本的称为警告框, 它显示一条自定义消息, 以及一个用于关闭该警告的按钮, 在大多数浏览器中标记为"确定"(OK). 在大多数浏览器中, 也可以通过按"关闭"(close)按钮将其关闭, 但这始终与“确定”按钮具有相同的作用. 查看样例警告框.

WebDriver可以从弹窗获取文本并接受或关闭这些警告.

	        //execute js for alert
	        js.executeScript("alert('Sample Alert');");
	        WebDriverWait wait = new WebDriverWait(driver, Duration.ofSeconds(30));
	        //Wait for the alert to be displayed and store it in a variable
	        wait.until(ExpectedConditions.alertIsPresent());
    element = driver.find_element(By.LINK_TEXT, "See an example alert")
    element.click()

    wait = WebDriverWait(driver, timeout=2)
    alert = wait.until(lambda d : d.switch_to.alert)
    text = alert.text
    alert.accept()
//Click the link to activate the alert
driver.FindElement(By.LinkText("See an example alert")).Click();

//Wait for the alert to be displayed and store it in a variable
IAlert alert = wait.Until(ExpectedConditions.AlertIsPresent());

//Store the alert text in a variable
string text = alert.Text;

//Press the OK button
alert.Accept();
  
    # Store the alert reference in a variable
    alert = driver.switch_to.alert

    # Get the text of the alert
    alert.text

    # Press on Cancel button
    alert.dismiss
            let alert = await driver.switchTo().alert();
            let alertText = await alert.getText();
            await alert.accept();
//Click the link to activate the alert
driver.findElement(By.linkText("See an example alert")).click()

//Wait for the alert to be displayed and store it in a variable
val alert = wait.until(ExpectedConditions.alertIsPresent())

//Store the alert text in a variable
val text = alert.getText()

//Press the OK button
alert.accept()

Confirm 确认框

确认框类似于警告框, 不同之处在于用户还可以选择取消消息. 查看样例确认框.

此示例还呈现了警告的另一种实现:

	         //Press the OK button
	         alert.accept();
	                
    element = driver.find_element(By.LINK_TEXT, "See a sample confirm")
    driver.execute_script("arguments[0].click();", element)

    wait = WebDriverWait(driver, timeout=2)
    alert = wait.until(lambda d : d.switch_to.alert)
    text = alert.text
    alert.dismiss()
//Click the link to activate the alert
driver.FindElement(By.LinkText("See a sample confirm")).Click();

//Wait for the alert to be displayed
wait.Until(ExpectedConditions.AlertIsPresent());

//Store the alert in a variable
IAlert alert = driver.SwitchTo().Alert();

//Store the alert in a variable for reuse
string text = alert.Text;

//Press the Cancel button
alert.Dismiss();
  
    # Store the alert reference in a variable
    alert = driver.switch_to.alert

    # Get the text of the alert
    alert.text

    # Press on Cancel button
    alert.dismiss
            let alert = await driver.switchTo().alert();
            let alertText = await alert.getText();
            // Verify

//Click the link to activate the alert
driver.findElement(By.linkText("See a sample confirm")).click()

//Wait for the alert to be displayed
wait.until(ExpectedConditions.alertIsPresent())

//Store the alert in a variable
val alert = driver.switchTo().alert()

//Store the alert in a variable for reuse
val text = alert.text

//Press the Cancel button
alert.dismiss()

Prompt 提示框

提示框与确认框相似, 不同之处在于它们还包括文本输入. 与处理表单元素类似, 您可以使用WebDriver的sendKeys来填写响应. 这将完全替换占位符文本. 按下取消按钮将不会提交任何文本. 查看样例提示框.

	         wait = new WebDriverWait(driver, Duration.ofSeconds(30));
	         wait.until(ExpectedConditions.alertIsPresent());
	        
	         
    element = driver.find_element(By.LINK_TEXT, "See a sample prompt")
    driver.execute_script("arguments[0].click();", element)

    wait = WebDriverWait(driver, timeout=2)
    alert = wait.until(lambda d : d.switch_to.alert)
    alert.send_keys("Selenium")
    text = alert.text
    alert.accept()
//Click the link to activate the alert
driver.FindElement(By.LinkText("See a sample prompt")).Click();

//Wait for the alert to be displayed and store it in a variable
IAlert alert = wait.Until(ExpectedConditions.AlertIsPresent());

//Type your message
alert.SendKeys("Selenium");

//Press the OK button
alert.Accept();
  
    # Store the alert reference in a variable
    alert = driver.switch_to.alert

    # Type a message
    alert.send_keys('selenium')

    # Press on Ok button
    alert.accept
            await driver.wait(until.alertIsPresent());
            let alert = await driver.switchTo().alert();
            //Type your message
            await alert.sendKeys(text);
//Click the link to activate the alert
driver.findElement(By.linkText("See a sample prompt")).click()

//Wait for the alert to be displayed and store it in a variable
val alert = wait.until(ExpectedConditions.alertIsPresent())

//Type your message
alert.sendKeys("Selenium")

//Press the OK button
alert.accept()
最后修改 May 29, 2025: Removing comments in English and maximising browser command. (1b5dc8c973)