Selenium：如何在 for 循环中获取 webelement 的变化值

Question

I am trying to get the value of weblement which changes with time. values are - Pending, Approved, Received .

I have to stop the loop when the value is changed to Received . I tried below code but it runs successfully for one loop and then stop in the second loop with error that webelement not found with the given xpath .

for(int i=0;i<=50;i++)
{
    String exactvalue=driver.findElement(By.xpath("//tr[2]/td")).getText();
        if (exactvalue.equals("Received"))
        {
            break;
        }
        else 
        {
        driver.navigate().refresh();
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            throw new RuntimeException("executing sleep interrupted");
        }

        }
    }

Answer 1

Replace Below line from your code.

Your code :

String exactvalue=driver.findElement(By.xpath("//tr[2]/td")).getText();

Replace with :

String exactvalue=driver.findElement(By.xpath("//tr["+i+"]/td")).getText();