Locating Elements in Selenium using ID, Name, Class, XPath, and CSS Selectors

Locating Elements in Selenium: ID, Name, Class, XPath, and CSS Selectors

In Selenium, locating elements on a webpage is one of the most essential tasks for writing automated tests or scripts. Selenium provides several ways to find HTML elements.

✅ 1. Locating by ID

Best for: Unique and simple elements.

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element = driver.find_element(By.ID, "username")

✅ Fast and reliable if the ID is unique.

✅ 2. Locating by Name

Best for: Forms and inputs with a name attribute.

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element = driver.find_element(By.NAME, "email")

⚠️ Not always unique — be cautious if multiple elements share the same name.

✅ 3. Locating by Class Name

Best for: Elements styled with a single class.

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element = driver.find_element(By.CLASS_NAME, "login-button")

⚠️ Only works with a single class (not a string with multiple class names).

✅ 4. Locating by XPath

Best for: Complex or dynamic structures.

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element = driver.find_element(By.XPATH, "//input[@type='submit']")

Can navigate the DOM with precision.

Use // for any level, / for direct children.

Supports complex conditions:

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//div[@class='user' and @data-role='admin']

⚠️ Slower than CSS in many cases, and more verbose.

✅ 5. Locating by CSS Selector

Best for: Flexibility and performance.

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element = driver.find_element(By.CSS_SELECTOR, "input[type='submit']")

Supports class, ID, attribute, pseudo-classes, etc.

Examples:

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#login       /* by ID */

.btn-primary /* by class */

div > input  /* child selector */

✅ Generally faster and shorter than XPath.

🧪 Example in Python (Selenium)

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from selenium import webdriver

from selenium.webdriver.common.by import By

driver = webdriver.Chrome()

driver.get("https://example.com")

# ID

driver.find_element(By.ID, "searchBox")

# Name

driver.find_element(By.NAME, "q")

# Class

driver.find_element(By.CLASS_NAME, "search-btn")

# XPath

driver.find_element(By.XPATH, "//input[@placeholder='Search']")

# CSS Selector

driver.find_element(By.CSS_SELECTOR, "input.search-input")

🧠 Tips for Choosing the Best Locator:

Strategy Use When... Speed Readability

ID ID is unique and available ✅ Fast ✅ Clear

Name Forms with unique name attributes ✅ Fast ✅ Clear

Class Name Simple, single-class elements ✅ Fast ✅ Clear

XPath Complex structure or dynamic elements ❌ Slower ❌ Verbose

CSS Selector No ID/class, need flexible targeting ✅ Fast ✅ Compact

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May 28, 2025

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