---
title: The difference between an Alert and a Popup | TestingBot
description: An Alert and a popup are two different UI components commonly used in
  (web) apps. Learn about the similarities and differences.
source_url:
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  md: https://testingbot.com/software-testing-questions/what-is-the-difference-between-an-alert-and-a-popup.md
---

# What is the difference between an Alert and a Popup?

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Alerts and Popups are two different UI components that can be used on a webpage or even mobile app. Below we'll go over the similarities and differences between these two components.

| Alert | Popup |
| --- | --- |
| An alert is a simple dialog box that displays a message and waits for the user to press "OK". | A popup typically refers to a new browser window or a modal dialog that can contain various elements like forms, buttons and other interactive content. |
| It is usually triggered by JavaScript using methods like `alert()`, `confirm()`, or `prompt()`. | It is triggered by user actions, JavaScript, or even by external links that open in a new window or browser tab. |
| **Limited interactivity** : The user can only acknowledge the message and close the alert by pressing "OK". | **High interactivity** : The user can interact with multiple elements within the popup (e.g., fill out a form, close the window, etc.). |
| Alerts are part of the browser's native UI and cannot be styled or customized. | Popups can be styled and customized using HTML, CSS and Javascript. |
| Focus is completely captured by the alert; users cannot interact with the rest of the page until the alert is dismissed. | Popups may or may not capture focus depending on their implementation; users can often interact with the main page unless a modal popup specifically blocks it. |
| Alerts are managed by the browser and are consistent across different platforms. | Popups are rendered within the webpage context and can vary significantly depending on the implementation. |

## Testing Alerts and Popups with Selenium

### Testing Alerts

To test alerts with Selenium, you can use the Alert interface provided by Selenium. Here’s how you can handle them:

```java
// Switch to the alert
Alert alert = driver.switchTo().alert();

// Accept the alert (click OK)
alert.accept();

// Dismiss the alert (if it is a confirm dialog, clicking Cancel)
alert.dismiss();

// Get the text of the alert
String alertText = alert.getText();

// Send text to a prompt dialog
alert.sendKeys("Some text");
```

### Testing Popups

Testing popups can be more complex because they can either be new windows or modal dialogs within the same current browser window.

**For Popups as New Windows or Tabs:**

```java
// Store the current window handle
String mainWindowHandle = driver.getWindowHandle();

// Perform actions that trigger the popup
// ...

// Switch to the new window or tab
for (String windowHandle : driver.getWindowHandles()) {
    if (!mainWindowHandle.equals(windowHandle)) {
        driver.switchTo().window(windowHandle);
        break;
    }
}

// Perform actions in the popup window
// ...

// Close the popup and switch back to the main window
driver.close();
driver.switchTo().window(mainWindowHandle);
```

**For Popups as Modal Dialogs within the Same Window:**

```java
// Assuming the popup is a modal dialog, interact with it
WebElement modal = driver.findElement(By.id("modal-dialog-id"));

// Perform actions within the modal
modal.findElement(By.id("some-element")).click();

// Close the modal if necessary
driver.findElement(By.id("close-button")).click();
```

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